I own an old Ford LTD that I restored. It is a beautiful looking car and I take it to shows often. Many LTDaddicts have replaced the auto 3 speed tranny with a 5 speed manual from a Mustang. Is this hard to do? It has a 351W engine. I would love to put a T5 in behind it. What are the steps to doing this and how hard is it? Thank you so much!