MR4TC BD help!

[whitecomet]

So my club is running a budget touring car night on carpet. So most are running TT01/TT02, so looking around on eBay I found a used MR4TC BD.



It looks well used and raced outdoors, so the plan is to strip the car and try to build it back as per manual, I was told it had a single diff in front so will have to check this.

It will be running on a indoor carpet track and using a 20t brushed motor (as per club rules).

Can anyone recommend best place to get replacement parts? Will the default gear ratio be ok? Is there any upgrades from stock people would recommend?