F.a.s.t. MIR

I guess I'm not really expecting an "out in the open" answer. But, I'm curious about tricks you F.A.S.T. guys use in your transmission. Pro-flite stuff? Low gear sets? I have a somewhat local guy starting to mess around with this type of deal. I'm freshening his trans and I have some questions. Appreciate any input. PM me if necessary. Thanks a lot F.A.S.T. guys!!