Nice boats, those Double Eagles! I used to have a 1991 18 1/2' hardtop Double Eagle with a 4.3 Volvo gas I/O with a 290 leg, and it preformed quite well. I had a Honda 15 four stroke kicker with a steering bracket for trolling. As far as changing from diesel to gas power, personally I'd stay with the diesel, unless the engine is kaput, but it's your boat. It'd be a cool project to pod it for an outboard and gain all that space in the cockpit where the doghouse is. I always thought if I ever podded mine I'd move the step up to the cockpit area a little further back to prevent hitting my head on the roof, LOL.:lol: Let us know what you decide, and maybe post some pics of your boat. Good luck.