hello everybody!! I found another parts that can fit VM2!!
I bought it and it works perfect!!!
it's ARC R10's gear diff~it's stronger than Atomic's and CHEAPER too!!!!
the atomic's gear diff cost USD$32.9
ARC R10's gear diff only cost USD$26.7!!!!
also~when you buy the R10's gear diff~you can change the original out Drive Spring(aluminum) to this one!! it's made with steel!! even stronger!
but notice~R10's gear diff is 38T~you need to change your front spool gear to 38T!!
and...you need your Atomic's bearing cap to let R10's gear diff fit on your VM2!!
by the way~my 5.5T brushless MOTOR "burn" my ball diff