NO, I BUY PROBABLY 80% OF MY SPARE PARTS OFF OF EBAY!! A LOT OF PARTS ARE TAKEN RIGHT OUT OF THE KIT, ADD UP WHAT IT WOULD COST TO LETS SAY OVERHAUL A DIFF COMPLETLY, IN MY CASE IT WOULD COST ROUGHLY $80-$90 BUCKS, I BUY A COMPLETE DIFF FROM RCPARTS STORE ON EBAY FOR $35 BUCKS, AND IF YOU NEED IT NOW AND DON'T WANT TO BID, A LOT OF STORES HAVE THE BUY IT NOW OPTION WHICH IS STILL PRETTY DAMN CHEAP. ITS THE WAY TO GO UNLESS YOUR A SPONSERED DRIVER AND GET YOUR PARTS, TIRES, MOTORS ECT FOR A HUGE DISCOUNT OR FREE.