You will need a 55 2nd. series or later V8 truck bellhousing- - - -the 235-261 bell will not bolt to a V8. That one requires a starter with a 3-bolt nose cone that bolts to the bell housing, not the block. You'll also need a standard shift flywheel for the V8. Clutches- - - -there are several available, all the way up to a 12" diameter disc and pressure plate for heavy duty use. I prefer the 11" clutch for anything but very heavy load-pulling. Your 6 cylinder clutch will bolt onto the V8 flywheel, I believe, but it's going to be the weak link in the chain. I'd recommend going bigger. The mechanical linkage from the pedal to the throwout fork will also need to come from a V8 application, so find a donor vehicle to scavenge the full bellhousing/linkage assembly from, or do some adapting to convert to a hydraulic setup.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!