I'll tell you now that that rear wont survive in that car. Get a strange ultracase 9 inch with large pinion shaft upgrade. When you put that much torque to a rear with a ratio that low, than add to it a hard street gear, the outcome will be continuously disasterous. Dont spend another dime on that rear if you want to go faster. You can get large pinion 9 inch pro gears in 3.50,3.60,3.89 etc..