hi iwas just wondering if anyone out there is still running the 166 belt on there 07 rev?? ive been running the 377 the last two seasons and havent really noticed any difference except for the huge price differenc its a 151 rev geared down 19/45 straight 40 sec helix stock prim spring, 15.4 grams wght, 0-2000 elev. i just think if the sled is set up right why would u need to spend extra money on a belt tell me what u think..