I have a 2012 Triton 21 HP with a 300 xs 3.2L. it has a sportmaster lower unit. I don't know how high I need to be running this motor. I am currently running a 25 p brovo xs about 70mph at 5600 to 5800 rpm. I'm being told that I should be seeing speeds at least in the low 80s and some people have even said upper 80s to 90mph. Anyone out there with a similar setup, any advice would be greatly appreciated