Workinginprogress,
FWIW, here are some links (none are mine nor do I have any connection to the sellers) for some essential books that you can buy to help you in your project!
51 GMC Shop Manual Reprint51 GMC Parts Book51 Owners Manual reprintAll are great reference materials that you can use to help your project along, and should you decide to pass on your truck to family or whoever, would be great additions to whoever might become the next owner.
