I run a STV pro comp 96 with 98 mariner 260 that is running 182 lbs compression bobs 6 inch set back hyd. lift. best run 103 1/4 mi. with modified yamaha 28 pitch 14 1/2 dia. 8200 rpm. best top 116 on gps masco 28 pitch 7800 rpm. They both come out so hard that it is easy to water ski with. If you are pulling that high of rpm your slip ratio is to high