welcome....first thing since you have a lot of salt issues as seen on the crome on the bumper...check out the Power Block show TRUCKS...they had a handy device that connects to your frame and runs a current that slow the corrosion, process from salt...that will at least slow down the damage from it....if you cant find a bigger motor on island..I.E. 5.3/6.0 then go tune/converter/headers...