I put a 250 SHO on my 203 a week ago. What a great engine. The bottom end and mid range are unreal. Have tried two props at this point 26 Fury with nothing done to it runs 70.5 and a 26 Tempest worked by Marks right at 72. Both of these are with a tornament load. Hoping with some more prop testing I can get that speed up some. From what I have seen the fuel mileage is about 4 at WOT. Ran about 100 miles this weekend flat out.