unbelievable! stormer has 3 of the chassis and there only $79!
I like to use 3 racing titanium ball studs, no breaks! I also use ceramic nitride diff balls from wallawalla on eBay. The nitride ceramic balls are only .56 cents each and come in both 2mm and 2.4mm. Use HPI d rings and HPI thrust washers. Use the titanium HB diff screw/t-nut.
You can also find lots and lots of cheap hop ups from 3 racing on eBay from the seller HKS hobby. ALl aluminum hop ups in purple anodizing and lots of graphite parts. They even have the 18t pulleys that come with 16, 17, and 18t pulleys for just $7.50 each 3 pulley's.
I bet you don't even need the longer front belt, it will be slackless and you may not even need the tensioner. Im gonna buy the belts anyways just in case. They are the 170t front belt and 63t rear belt.