I bought a used 88 XB2002 last year with 88 2.4 150 XR4. Ran okay, rerigged with a 175 2.5 EFi Merc and the difference was night and day. Went from a 24" chopper on the 150 to a 26" Hoss Triton when I made the switch and also had the lower redone with Titus mods so I'm sure that made a difference. If you don't fish and want speed I would go bigger, it seems to me if you put a large pitch prop on a 150 that would have to affect hole shot but most of these guy's have a lot more experience than I do. The 150 with the 24" chopper I had was kind of a dog out ot the hole, prop would try to blow out, but after it was on plane it ran great. Just my experience..