Rather then spending 35 bucks on a 42t ring gear I bought a complete mgt7 diff. I checked the part numbers and everything seems to match up. Has anybody tried the mgt7 diff? I bought the 12 t pinion gear separate. Thanks, the buggy I bought came with a few sets of springs but most don't have the little black tag on them. I'm gonna have to do some research to check diameter/coils to see whats what. I won a shock duplicator. I thought about putting the springs on the shocks w/ no oil in them to see if I can match these springs up on the duplicator.