The '66-up Falcon engine bay is identical to the '66-'71 Torino/Fairlane...
As far as cutting down the input shaft, the small blocks actually use a slightly longer shaft. The 427/428/429 generally had a 1 3/8" input, vs the 1 1/16" of the 390 and smaller engines. Possibly it could be cut down, but would have to be re-splined as well... also those trannys use a larger throw out bearing, and wider spacing for the clutch release fingers on the pressure plate. I don't see it as very likely...
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1988 Turbo Coupe...5.0 Conversion... AOD... 3.73s
NA 13.11@105.32....W/90 Shot
12.23@112.19
<font size=-1>[ This Message was edited by: TurboCoupe50 on 3/8/05 6:29am ]</font>