cool,i'll put it on. i have 3.73. the problem is I put a very ported upper/lower stock, but for some reason the drivers intake side is causing a bad vacuum leak. at first i thought it was the gaskets, but put new ones on. I can notice a big difference, flows free, but that vacuum leak is the issue. I'll put the rpm on. if any needs a ported upper, pm me. its been ported by rick anderson back in the day(according to the guy i bought it from).