I bought one from mancini's and recently bought a replacement for it at O'reillys. The one I got from O'riellys was off something like a 96 v6 dakota and spins that 383 of mine just like the mancini one and rebuilt was about 60 bucks with exchange. ( i gave them an old low torque factory as a trade in ) Works like a champ and spins my engine over way faster than the old styles do.