You can't use clone flywheels on the hemi cranks....sometimes they will work on non hemi cranks but that is a hit or mess whether it will hold or slip time. If you are dead set on using that flywheel, take it and the crank to a machine shop and have them cut the flywheel taper to match the crank taper for you, otherwise you have only 2 choices....either get the right flywheel made for the hemi predator, or put your clone crank and rod in the predator and use that flywheel