hmmm.. did some tinkering with the landmax, OPS .21, SH 86 pipe, firioni sliding clutch, 17t clutchbell, and 200ft. I need to get the landmax off the line a lot faster so a bit of clutch tuning is in order but I'm going to leave it because the .28 has sooo much more low end so I'll wait. Hopfully I'll get the .28 in the Landmax and see how quick it is this week. I tried the torque pipe.. and it limits RPM too much and RPM is needed on the big end. hehe.. mabey over the winter I'll build another .21 rear drive RS42. I already know how to make it work and make it stick.