gears are good, but may be too much with a supercharger. i've been thinking about getting 4.10's installed. from what i've seen on here, they would make my rpm about 2500 at 65mph. i'm currently at 1900 rpm at 65mph with my 3.27's, so it wouldn't be a big difference.
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2000 mustang gt, silver with black interior and manual transmission
current performance mods:
80mm pro-m with filter
c&l plenum
mac 70mm throttle body
mac underdrive pulleys
pro 5.0 shifter
3.90 gears
dynomax super turbo mufflers
diablosport predator programmer
future performance mods:
x-pipe with converters
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