Yes we ran it for 720 hard miles after we rebuilt sled from crash. And stock belt still looks good,will run it this coming winter. I have Evo,s stage 4 tune,sandale full 3" allens CAI and allens stage 2 clutch kit. Primary is 81 grams,i also added two slippery washers,one on each end of spring,it was black/pink.secondary straight 38 degree,with torsion spring from cat,red/blk with offset tangs,so when you wind it,start zero and 1 but we had it zero and 3 man its hard to twist with that much pressure,also new rollers from supreme tool,who he also runs his supertip weights,and I think its there helix to boot,only thing was it hit so hard on up shift,once it spun and dug a hole,it would overshift,and have a hard time bringing rpms back up to where they belonged. And Evo wants 9200-9400 on 91 octane for 265hp with CAI,although allen saids there numbers are conservative,we shale find out this dec. when we get some cold air,i will have phil Stanley dyno it,to see where its sweet spot is. I am interested in Dales 33/37 or 32/38 reverse helix,and his secondary spring.