1963 vintage Airfix E.E Lightning F.1A 1/72

[The Wooksta!]

Oh, and bringing the F1As up to F2 standard is a big job, as the older aircraft had a four stage reheat, with fully variable on the F2 onwards. 

[Pellson]

Only 74 Sqn had the F1, which didn't have IFR capability.  At best there were 19 and at least half were scrapped by 1966. The survivors were largely second line training aircraft, gate guards or instructional airframes.

The F2A came in gradually from 1968 and externally nigh identical to early F6.  Not Red Top capable and the wings were not stressed for the overwing tanks.  31 conversions.

Oh, and bringing the F1As up to F2 standard is a big job, as the older aircraft had a four stage reheat, with fully variable on the F2 onwards. 

Yes, as the original F.1's were more or less hand built, they did not only lack lots in comparison to the F.1A/F.2, but also differed considerably between themselves. However, in Whifworld, that may be overlooked, or possibly explained away (Kit's 2^nd Rule). The inability to IFR could, theoretically, be cared for by taking undamaged wings from those F.1A's and F.2's that suffered engine fires on the ground. There are quite a few up to ca 1968, so the available second hand wings may actually suffice for the few available F.1's.
The F.2A flew in September 1965, not quite half a year after the F.6 prototype, so I would have guessed the decision to convert the F.2's was made early 1965. And that's the point where I intend to deviate from reality.
As for the afterburner, it's actually not that big of a job. The afterburner as such is a separate part of the engine, one you relatively easy can withdraw rearwards through the tail of the aircraft, without having to lift out the engine. Also, the controls are manual (lever and wire), so very easily reconfigurable with a new backing plate in the cockpit. Hence, an afterburner replacement is really more of a field modification than a factory job.
The big job in my sequence would be to upgrade the electronics and radar. That would entail not only new parts in the inlet bulb, but also a good deal of wiring, new electronic boxes (where the guns once resided) and not least, an entirely new dash in the cockpit. That is factory work, but it's also what is driving cost. Hence, saving costs of new wings, tails and fuel bellies, perhaps more electronic kits could be afforded, allowing for more radar missile capable interceptors in the field? Also, as I would assume the F.3's and F.6's would have received the same upgrade in the same sequence, the number of kits would have been reasonably large, meaning lower unit cost.

I really appreciate your input. It helps a lot to sharpen my arguments, making for a better backstory. 

[The Wooksta!]

You're assuming that there was enough left of the F1a's that suffered engine fires survived - often, the pilots banged out. Away from my primary references so can't check the individual histories.

[Pellson]

You're assuming that there was enough left of the F1a's that suffered engine fires survived - often, the pilots banged out. Away from my primary references so can't check the individual histories.

I found a page on Wikipedia about Lightning losses, but regardless of that - Kits 2^nd rule applies. If the reality don't work, just adjust a little bit in your backstory.. 

[PR19_Kit]

I found a page on Wikipedia about Lightning losses, but regardless of that - Kits 2^nd rule applies. If the reality don't work, just adjust a little bit in your backstory.. 

Exactly, that's WHY it's a Rule! 

[NARSES2]

That's looking quite good in that shot, the image it'self has a certain "period" quality. 

[Pellson]

That's looking quite good in that shot, the image it'self has a certain "period" quality. 

The light was outright awful, probably leading to a 1960's picture quality.. 
The kit is good fun, though. Few parts, reasonable fit but still bad enough to make sure that the thirty years of experience I've gathered since building my last Airfix Lightning does make quite the difference.

Re the backstory vs reality - the only reasonable way would in reality have been to scrap the F.1's, maybe update the F.1A's and then to do what they did, i.e make "almost F.6's" out of the F.2's. But what would I then have done with my F.1A model? Hence the somewhat unrealistic F.2B programme I'm suggesting. It's another backstory written after the model, not the other way around. 

[The Wooksta!]

Or just do it as an F2 with a different squadron.  There were enough ordered to equip four squadrons, but only two were stood up on the type.

Just need to drill out the gun ports again and another set lower down (the second set of cannons replaced the missile pack).

[Pellson]

Or just do it as an F2 with a different squadron.  There were enough ordered to equip four squadrons, but only two were stood up on the type.

Nah. I've looked at that and just don't find it enticing enough.