If you use the modern driveline cable setup, you can basically use all 5.0 stuff except for the flywheel (due to the imbalance difference between early and late SBF's).
I think there's a Ford Racing flywheel at the early imbalance that lets you use a later 5.0 10.5" clutch (cheap!). I would check with Summit on the early imbalance, Diaphragm-style
Clutch flywheel then the rest is easy.
So:
85-93 5.0L T5 bell housing, block plate, clutch fork and starter (no 94-95 as the input length is longer)
5.0 clutch kit of your choice
Early imbalance flywheel for Diaphragm clutch
Cable linkage conversion