anyone have numbers on the inlines (6 cyl in particular)? curious also the difference on lighter hulls you have seen from a 115 to a 135, 140, and 150?

i ask because i have a 115 (1971 i guess) and a fairly light hull. to me, if i only pickup 5 mph between mine and say a 135, i can be happy with the 115 for a while. people say it is reliable. i don't know... thanks