I am looking at buying a 358 Sonic but am not sure which engines to go with. I really like the idea of the speed that the 575's will give me but worry about maintenance, fuel economy and overall reliability. I currently own a 31 with 502 mag MPI's and these motors have been great. We do a fair number of hours per year (approx 75) and don't want to have to mess around with constant maintenance or rebuilds. Anyone out there that can help?
How about the 500 EFI's too. I've found a nuber of boats with these motors but performance wise will they be lacking??