I just spent days wandering through Marlers Salvage in Idaho Falls, Idaho. I feel certain one of their Gen 1 trucks should still have a door handle. (They've got at least 8 gen 1 pickups) Give them a call or find them on the inter webs. Not sure what they'll charge but I was happy with how they worked with me in finding chrome steel wheels and I scored an LSD rear axle... (tho I was visiting my daughter out there so I was able to dig and find those parts myself...)