hey i was on americanmuscle lookin at the gears, and i know my 03 has a 7.5 rearend, right? and on americanmuscle all the gears i looked at said to put on 8.8 rearends??? i was looking at the 4.10's and they only said 8.8 rearends.. by the way are 4.10's a good idea for my 03 v6 auto.??