Ok, What I would do with a 67' Mustang is, Loose the 302 and get 351 if u can find one cheap, if not just get Performer Rpm Intake manifold, 600 cfm edle Preformer carb and a smooth idle cam. You can find all these products in Summit Racing Equipment or Jegs High Performance. www.summitracing.com and www.jegs.com Keep stock trans and rear end. Get some wide rear tires or D.O.T approved drag tires. If it's manual get a Hurst 4 speed shifter or if it's automatic leave it stock. I would say the same about the manual but they have a good feel to the shift and, there worth it. Black interior and a Grabber Blue exterior color.