with a full load and me, using rear wheel hp, I'm right about 10.
car weight alone and crank hp is about 8.
either way nearly enough for a SWB on 6 inch rims

. tire width, brakes, suspension, make a big difference. IMHO as mentioned above, a lighter car, no matter what , is just more fun. a heavy car, no matter how powerful/fast, still feels heavy.