Oh and it is a five speed ax15 jeep tranny right now. I'm hoping to slip in a th350 when I get the motor figured out. But for now I'll stick with what I have. I also don't know about vacuum leaks but I replaced all the vacuum hoses that I know of. I replaced the one to the break booster and to the pcv valve as well as changing the pcv valve. I changed the vacuum line going to the distributor. I don't know of anymore but let me know if I missed anything.