t5 to my 67 w/289

[66fastback]

as far as the T5 install goes, use the late model bell housing and convert to a cable clutch. When I originally installed mine I modified the late model bell housing to use the stock style clutch pieces (which had 30+ years of wear and tear on them). It worked, but I was never happy with the clutch. I finally swapped over to a cable clutch and it was one of the best things I ever did to my 66. Smooth and reliable.

As far as the engine/tranny swap. If you really have a dead cylinder on the 289 (read from another post), then you should probably just pull the 289 and store it and swap in the 5.0. Yes there are parts to purchase and it is not a slam dunk, but it is a very easy swap that will net you more power and possibly mileage. Just bolt on your carb, intake and exhaust and go.

Oh yeah, the drive shaft from the 88 will be way too short, but the Yoke will work on the old driveshaft (which MIGHT have to be shortened, I would put it in and check the clearance before I sent it out to be cut.....mine had to be cut about an inch.)