Most Fords use a 1 1\16 input, but some hd transes used a 1 1\8 input, as far as flywheel, an 11" is norm for trucks, but most important get the flywheel for your year and size of engine, it is important for proper flywheel\crank balance and a centerforce dual friction is the heaviest duty clutch you can get, for light to medium duty a Borg Warner brute force will do, also you might want a diaphram cover instead of a 3 finger cover, it will be easier to engage.
"Its a Ford. Nuff said. Everything else is just a glorified tonka toy"
"ASE" Certified" Parts Professional
92 F150 302 4x4 Long bed Extended cab
2001 Taurus wagon