alignment issues

Ok here it goes, i bought a 99 silverado from a friend,real cheap 1200 bucks cheap. The thing was is that it had been wrecked and the frame was pulled and fixed. My problem isnt the frame my problem is the fender alignment. i cant get the fenders on without the doors rubing. The truck hit a tree in the accident my question is, is it possible that the cab could have inched forward alittle causing this problem? any help will be appreciated. i am not a body guy i more of a engine type of person so this isnt helping me get my truck going

probably have to pull the fender off, and put a washer on the back side, to space it away from the door. There isn't TOO much adjustment in the door itself. Shouldn't need much. Will be noticeable if you REALLY look, but better then grinding/paint coming off.

did that it pisses me off, the rad support isnt right either