Hi Brother
I’m working on mine now here’s what I’m doing, but its just one of many examples here at TDH
I marked exactly where I wanted the hinges to be and traced it with a pencil. Next I predrilled holes then applied a thin coat of JB-weld. I placed the hinges on the JB-weld and aligned the holes. Next I screwed in half inch screws and cut off the ends with a Dremel cut off wheel. Grind the ends down just below the surface. Fill in with auto body filler, Bondo and prime.
Hope this helps