Something doesn't add up here, my buddy has an 18 850 mxz 129 studded to the moon, I had 15 viper ltx dx 137 mpi turbo (4.5-6 psi) and 1.6 ice cobra track, I used to take him every time by 3 sled lengths, until he got a clutch kit, now we're pre much even, depends who gets traction out of the...