Tupolev Tu-1?4 airliners: Tu-104,Tu-114, Tu-124, Tu-134, Tu-144, Tu-154, ...

[ysi_maniac]

What if equipping Tu-134 with RD-7M in order to have a real SST (match 1.25 approx) ?

[McColm]

Great job.

[sandiego89]

She does look good 

Might not get you intercontinental range however....

[Hobbes]

Might need more wing sweep than the standard airliner, but interesting idea.

[Dizzyfugu]

A complete tail section from a Tu-22 "Blinder" with higher engines and low stabilizers would work, too?
Could well become a successor to the (unsuccessful) Tu-116, a Tu-95 bomber hastily converted into a long-range VIP transport (since the Tu-114 airliner was still in the pipeline, two or so were only built):

[ysi_maniac]

We took a Tu-144 and replaced its 4 enormous underwing engines with 2 even larger ones located at the base of the tail fin. Afterwards, all the freed space under the wings and fuselage is occupied with a huge cft.