I swapped in factory/OEM spider gears to the tune of $240 or so. I could have gotten a replacement set from $80-$100+shipping if I had ordered third party online, but that would mean waiting, and waiting means the rental charge on this big ass pickup is going up, which would have ended up costing more than the bloated dealership parts prices. I tried local auto parts stores, but nobody had anything for the 3.55 and lower carrier in stock, meaning more ordering, and more waiting. I'm going to hold off on upgrading the axles for now, 31's and 3.07 isn't too bad after doing the intake, exhaust, and reprogramming the computer. I dont want to dump any more money than necessary into this d35.