I been paying around with the Ga. stock appearing class, rules are pretty simple, any clone predator honda or Tillotson block 70mm to plus .010, any cast crank up 56mm no machining or polishing, billet side cover allowed, any jt series head valves are 27 & 25mm springs rockers are open porting and chamber size is open, any cam & lifers, any rod, piston must be factory stock big pin flat top or dished and retain factory numbers or arrow markings on top no machining, any billet flywheel, any small clone type carb with any mod as long as no epoxy is visible inside or outside (tillotson pk 875 gas, we make work on VP M5 is the dominate carb atm), any pipe with open mod muffler. Got a HF hemi block and crank with 14cc clone head with all my magic spread into it making 19.6 hp pulls good up around 9300, lol i need a driver to go win atm.