2-seat Mustang with rear bubble

[Tophe]

With double bubble there is a possibility of the front one not hiding the view for the second if there is an asymmetric touch:

[Vulcan7]

cool idea, reminds me of the asymmetric Sea Vixen set up (with just the one canopy though) 

[Tophe]

Thanks!
And here is the top view:

[Tophe]

And both versions are twinned on there:

[Tophe]

Other possibilities involve pusher-Mustangs: 

or twin-engined Mustangs:

[Tophe]

or asymmetric single-engined (same profile as twin-engined but only one engine and tailplane on the same side, longer wing on the other side)

[Tophe]

Here is the port side of the asymmetric version:

[Tophe]

There was also a canard version (caution: bailing out is rather dangerous!):

[Tophe]

The engine was on some versions inside the fuselage with shafts and gears towards lateral propellers:

[Tophe]

Some Mistel Mustangs also had a rear bubble canopy: