1967 mustang fastback

LONG but please read, this could be fun! 1967 fastback mustang (looks just like eleanor) has a 427 stroker and a t56 6 speed ******, 4.11 rear end. ted's dyno shop 568 hp, 608 tq. ok so my father has a super nice 67, however his system is lacking big time. if you're not familiar with a...