wait wait wait.......the reason is ....is the pt 185 new boat is wider than my pro-18 which is maxed for 90hp. the boat is widerr ok ive checked and thass what tracker told me. my 90hp runs my boat right at 54 or 55 with ss prop. what else is needed to know email me at [email protected] im a pro at tracker boats ok, all ive ever dealt with.......paul.