Mr. Fink, welcome to H.A.M.B. Stock rear end will handle any power that the described engine set up will make. Rear end ratios should be considered and that depends on how the car (truck) will be driven. A stock transmission will work with the power your OHV set up will make, no synchronizers though. A lightened flywheel and V8 clutch will make it more drivable. Your enthusiasm set aside, go read the rules of the Board here, make an introduction and complete your profile. Bangers are cool and OHV ones are fun and remember if you can go fast you need to stop too.