I have an Auto. 96GT. Love my 4.10's. If you have manual, 3.73's ... (hasn't effected my MPG unless my foot is heavy) I cruise 75mph @ 2700ish rpm's which is the sweet spot. I was turning 1800rpm's @ 80mph with stock gears. And that was no fun. Lol
96 GT, P.I. Swap, X-PYPE, 4.10's, BAMA Chip.