I am finally getting around to performing this on my alpha 1 Gen II 350 chevy(s). Although, I suspect it will be a nightmare. 2 tanks run 8" along under neath gunnels and are slightly resessed so cutting out deck and pulling out from top may not be the most efficient method of removal. I have thought of removing each motors' outward exhaust manifold and cutting out center fish box. Hopefully, I could pull tanks inward towards bow/keel (where fish box was) and pull upward. I might have to cut some deck near rear end of boat by motors. The other option would be to pull both motors and ODs and partially cut fish box. This option really sucks! Another option would be to use a saws all and cut gas tanks to pieces and remove piece by piece. That sucks more! Any one who has knowledge, please advise.