I'm going to buy t-case gears. Should I get the 4.1 or 4.7 's ? I have 4.30's in the rears. The final ratio is 157.1 with the 4.1's and 184.1 with the 4.7's. I was going to go with the 4.1's because I really didn't want to do the t-case mods. But I am still undecided. Which ones should I get ?