what is the best way to smooth out the door, fender, and rear 1/4 panel where the side moldings used to be? i have a body kti on my car and i was wondering whats the best way of covering it up. bondo cracks over time. fiberglass isn't the best. i was thinkin about welding a new piece of metal to make the door, fender and rear 1/4 panel all flat. any advice would be great.
TIA