Vary hard inless you are good at welding and fabrication and have the proper tools
also depends on what leval of custome you are going for
also note that only 1 or 2 wheel base lengths are close to the right size for your trucks body


Luke Dahlin

1946 Chevy 2 ton
1966 Chevy 2 ton
1969 Chevy 3/4 ton 4wd
http://www.stovebolt.com/gallery/dahlin_luke_1969.html]1969 Chevy 3/4 ton 4x4