Good call on the 2 into 1, first thing I did to mine. I ride only at buttercup and gordons, have no trouble with that setup out there at all. Mine is strictly sand ridden , stock bore, with a shaved head, timing reeds etc........ Pulls hard enough to need 10 paddle extremes. 450s, really are a surprise when I miss a shift( normally because I've cleaned out my cooler at the hill.) My setup is conservative but dunes very well. D&M built my motor , they are out of PHX. Check planetsand.com for their credablity. HTH
TIM