I have 3.73s and love them. I have never had 4.10s so I really can't compare, but I can tell you that the 3.73s made a BIG difference, especially noticable down low where the mods need it.
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'97 Cobra, Rio Red, MAC Cold Air Kit, 3.73s, NGK V-Power
BBK H-pipe w/cats (Coming Soon!!)
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