Going to install Gears! cost and ?? 3.73's or 4.10's ????

JonJon said:
What RPM do you cross the traps? MPH?

If memory serves me it was 104'ish...couldn't tell you the exact RPM but still had room. Normally I pay a lot more attention but had a wedding to go to that afternoon so I just made some quick shake down passes to make sure I wouldn't have to shift to 5th.