Just purchased a '38 Chevy pickup. Was told that the bed was originally a long bed and had been shortened. Most of the bed side fender holes have been filled. The rear fenders that came with the truck are fiberglass and do not have pre-drilled mounting holes. Are there any drawings available that might show the bed sides with the fender mounting holes? If not, would the best route be to mount the running boards, then work my way back? Any suggestions would be appreciated.