ruzzy work??

im shaving my bed and cab seams, and i wanna know should i just weld them shut?? cause i know if i use filler it will just crack later on cause of vibrations. so would a arc welder work on the bed sems?? i think i might need a differnt welder 4 the cab?? is it easy 2 shave them ??? seams easy??? need help quick reppin ruzzy kustompup93