Not sure if this is what you are asking but top speeds are as follows

1st gear 39 mph
2nd gear 76 mph
3rd gear 127 mph
4th gear 127 mph (not a typo, that's what the book says)

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I really gets fun when they all don't run

84 500SL
99 Jeep XJ
93 Jeep YJ
03 Custom Softail