Came across this on eB_y and thought if there is any truth to their claim this would be the proving ground
Has anyone heard of installing an aftermarket harmonic balancer and can you actually acheive an extra 12hp at the rear wheels. If so what is the sacrifice? It says it slows down the accessories to increase HP.
Note that is does say it fits ALL 5.7L and 6.1L Hemi's in the auction.