the passon 5 speed might be $5-6k or what ever it is but that is basically all you have to buy and maybe a clutch disc. if you go buy a tremec you need a cross member, drive shaft and yoke, bell housing, clutch linkage might change, a clutch, which all adds up and after all that you have trial and error making sure everything fits and driveline angles are correct. passon 5 speed is a true bolt in deal that can be done on a Saturday morning and out cruising by lunch time and keep your stock floor pans.. just my 2 cents