Give any tranny company a call. They will be able to tell you. If you are gonna make mods in the future the converter will feel "weak". I think that is the term Im lookin for. There are more things to the converter then just stall. If you pick up the latest issue of Car Craft...the last page breaks it down for you. Again, call the companies...if they wont spend the time with you, dont spend your money with them. Im sure some of the guys on this page have some or all of the mods your planning. Check their web pages and then give them a pm as well. My SC is a 5spd but my 97 thats gettin the 5.4 is an auto. I havent played the game for it yet, so let me know who is the greatest help...