I swapped a 454 into my 92 1/2 ton 4x4. I lived in Arizona so it needed to pass emissions. The truck is a reliable daily driver and as awesome power but for all the little things you need to deal with I would look for a truck with a 454 from the factory. You can probably buy a used one for the same money you throw at your 350. Use the big block to tow and the one you like as a daily.