t5 trans swap?

Does using the S10 tailhousing mean that you won't need to modify the reinforcement above the trans crossmember?

That is the plan. If I can't get the same drive shaft angle, I will explore trimming the ridge on the top of the S-10 tail shaft or notch the x-member tunnel hoop (or both).

The engine placement/angle is the primary consideration on my 65, followed by the trans x-member strength. It is pretty tight with the TTI headers and everything on the driver's side of the engine bay - it wouldn't take much of a change in drivetrain angle to give me a bunch of new headaches. I still have to figure out the final location of the clutch master cylinder in that same area.

You know the joke..."if I only had 2 more inches..." Well, the early abodies have 2" less between the front frame rails. Committing to the TTIs have complicated my build a bit. I love them, but it sure is tight on the driver's side.