RE: Overall which is best performing ATX/Rally/MT
Using an OS .18 cvrx engine in the buggy.
In order to use 1/8 scale buggy wheels (which are 17mm hexes) on the ATX you will need to get adapters to adapt the stock CEN 12mm hexes to 17mm or switch the CEN to 14mm hexes and then get 14mm to 17mm adapters. GS and Imex makes 14mm to 17mm adapters but to the best of my knowledge nobody makes 12mm to 17mm adapters.
rolland