I have a friend who has a 24 foot ocean boat powered by a 351 Ford marine (apparently one made in Mexico and not Michigan, so is suppose to produce less than 260HP), VolvoPenta outdrive, 4 barrel carburetor, that seems to have a maximum RPM of about 4100 WOT @ 24 knots and burning 20+ GPH. At about 3800 RPM and 21 knots it burns 16-18 GPH but seems to loose performance/handling at this speed. I know this is a common engine/outdrive set up, so I was wondering what sort of suggestions/ideas there are out there to *improve* this set up. Would going EFI be of any benefit? Replacing the cam? Is there anyone/anyplace folks take these to for marine upgrades (for automobiles I would think Coker's in Los Anchorage). We have the winter to mess around with this boat, so any suggestions are appreciated...Thanks in advance for any help!