I have 1989 24 offshore I totally restored. Plan on all electronics, wiring and fuse panel, fuel tank, fuel lines and steering. I also added bigger trim tabs. I put a single yamaha 250 four stroke on her and she performs pretty good. I have 100 gal tank and usually run 100 miles round trip, when I run I burn anywhere from 45-50 gal of fuel. WOT is 30 mph she likes to cruise at 4000 17-22 knotts depends on the sea. At fishing weight loaded with fuel, Ice,four people and gear im at 4200 cruise 17-22 knots.