4 speed swap in 70 dart 340 from a 904 auto
FWIW I just put a 4 speed behind my 318 with a cheap set of headers. I was worried about z bar clearance but It was a breeze to get in there and no interference when I hit the clutch.
I think TTIs have some z bar clearance issues tho. but I think people have just modded the Z bar a bit and got it working.