they move really good once you spend 30,000 on them...
a guy I know has a dyna twin cam 88a (unbalanced motor) with a 103'' (I think) kit and a mikuni 41mm flatslide, plus some other stuff and I think it puts out around 90-100 hp and about 100 ft-lbs. It does weigh 650-700 lbs though...and I think he has dang near 30k in it...