wrote in message
oups.com...
I have been thinking that it would be cool to refit an old 337 with
twin jet engines mounted in place of the rear engine with snorkles for
the intakes and a nose extension fairing in place of the front engine
for drag reduction and CG adjustment.
snip
There is an experimental aircraft for you!

Actually, you would be implementing / developing an STC, not building a new
experimental aircraft... The rules are a bit stricter for that...