silverbullitLS1

A few weeks ago my MN6 tranny and differential broke on me, so im getting my tranny built and i purchased a stock c5 zo6 differential with 3.42 gears and since i live in west texas there is no one around here that i could find to install gears in it. i also read that going bigger than 3.90's makes the differential weaker is this true? Who install's gears and what gears should i go with?
mods on the car are vararam cai, ls6 intake, electric water pump, UD pully, stage3 ls6 heads, whiplash2 cam, kooks LT's, GMMG exhaust, spec3 clutch, and soon a 100shot. Oh by the way the car is mostly used for street racing.
any info will help thanks guys