I have a 1969 Mustang convertible. My 69 Mustang currently has a 302 engine. It was removed from a 1986 Mustang, and it has a 3 speed manual transmission. I also have a T5 tranmission from a 1986 Mustang and would like to replace the transmission I currently have with this one. My question is: What parts do I need and can I use any existing parts from the transmission that I am removing. I need to stay on a budget to complete this mission.