I stretched my truck frame 11 feet. One of the truck salvage places nearby had a stack of brand new frame rails. My two frame rails cost me $300. I butt welded them...welded a diamond shaped gusset on the outside...and welded a 3 inch wide 1/2 inch thick 2 foot long piece of steel on the lower inside lip of the frame going across the splice. This is similar to how a local truck shop builds trucks that are actually used to haul weight. They leave out the diamond gusset and use a 6 inch long piece of steel on the bottom of the frame. Since I am not hauling near the load.....I am confident that it will hold.
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