So this is how the rear of my truck looks now: I would like to move the fender opening to line up with the new axle location. I'm having a hard time visualizing how to go about this. I have a general plan of action. I was going to cut the skin off below the body line and cut a similar piece from a donor truck. I want to cut them so that the new piece will move the opening back as needed. My plan is to just weld them in as butt seams. Kinda like a huge patch panel. What's really got me stumped is that I don't have any idea what the inner fender looks like once the skin is off. What will need to be done there? Anyone have pictures of a skinned rear fender? Or does anybody have any better ideas?