These are good engines. They use non hemi predator cams, clone rods, and clone heads/gaskets. I have seen some that will use a clone flywheel and some that had to have a non hemi flywheel. They have a 54mm stroke and 70mm bore. There is an .080+ stroke crank out there sold by a guy here in Ky named Terry Dunigan at D-Power racing, they are very nice cranks and use clone rods and flywheels, they cost just $85, which is cheap for a good stroker crank. That would give you the option to use a .020-.040+ rod to put the deck height and pop up wherever you want it and use head gasket thickness to get your clearance where you want it, if you are wanting to build a modified or open engine or build it up. One of those cranks, a .020+ rod, .275 or 308 cam with champion rockers, a well built big valve head and good 390 alky carb would make for a stout stock appearing engine, I have built a few myself