My son's making changes to his 67 Dart. He will eventually be going to a Gen3 Hemi w/Mods. This is a street car. He will be running Cal Tracs, TKO 600 5 spd and will use a 27 x10.5 ET Street tire. He was told to put a Back Brace on it and it will use a clutch posi. Opinions please. thx matt