Numerically higher gears will work better with the cam, too. They just say 3.55s minimum because you're losing some low end with the cam and you don't want it to take forever to get into the power band.
4.10s minimum for a '99+ GT; I don't care if it's an auto or 5-speed. The optimum gear for a car depends on the engine's powerband, gearing in the tranny, etc. 3.73's are great for '96-'98 4.6 2Vs and 5.0s, but they make power down lower than the newer motors do.
I have driven 1500 miles in a weekend with my 4.10s and didn't mind them at all.
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Strike down the unroadworthy!
2000 GT Atl. Blue: '03 Cobra motor - 465rwhp/473rwtq, T-56 6-speed, full MM TA/PH & tubular K-member suspension, Saleen body, 17" Torq-Thrust II's, M/T ET Street radials, and lots more
'94 Rio Red Cobra: All the bolt-ons, 3.73s
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