I will be getting a 1965 Mustang with the 289 in it. What are some good add ons for it? I will have about $4000-$4500 left after I buy it. So what would be some good ways to start fixing it up? I was thinking of spending about $1000 on some new custom leather seats. Then I don't know after that. What would be some good parts to get for it? Thanks for any ideas!