Car must outwardly appear completely stock. No frame connectors either. Once you break into the 9s, you are required to run a rollbar like any other class. Heres pix of a 68 Hemi Super Bee Dave Dudek built and runs. 528 Hemi. Runs thru extrude honed stock date correct cast iron exhaust manifolds. Car hooked so hard he bent the rear springs that's why its *** sags in the pic. This is a bonafide 9 second car. Check out the 6 point roll cage