[DanEC]

I would guess that you could install the engine and transmission together at once in an ERA - at least with a small block. Someone who has done so may chime in. But it would take quite a bit of maneuvering and require a second and maybe third set of hands - someone underneath to handle the transmission and someone to steady the engine and watch for clearance. The ERA has a pretty massive center frame section under and behind the transmission that you have to get the tailpiece up and over and still clear the top of the tunnel at the firewall - I suspect it would be more difficult in an ERA than in an original Cobra and runs the risk of scaring up the frame and firewall.

I couldn't imagine trying it with an FE and big Tremec transmission. Stuff of nightmares.