My 3.55 revs at 3200 rpm on the hiway at 60miles an hour what is best gear ratio to change to 3.23 or 2.93 Iam thinking of swapping my 3.55 on an 8-3/4 rear end on a 69 dart, please give your advice if ever done or driven one with 3.23/2.93 rear ratio,
thank you so much!