The T4-X may not be the best choice for a 2003. I tried a 26" and with my 280 it drove nice up to the limiter at 93 but it was so slooow to hook up out of the hole that I returned it. GAR
I sold pops that 27 spinelli for your boat he told me I should have never sold it to him I now have a 28 T4X I am going to try I do think I wll have to send it off to get some bow lift added to it.