If you spin the conveter around you may be able to finde some stamped numbers on it. If it's a prec. then it will have numbers on the billet front cover as well. If you get those numbers, call Prec (in TN) they will tell you what type of trans it's for, single or multi disc, lu or nlu as for the stall I'm not sure. Just power brake it and watch your tach (not the factory one)