Good morning on your side of the world. Finally getting around to working on my stack headlight pick me up truck. Had the thing for over 30 years but just now getting around to doing the work. It is a 1981 Crew cab dually 2wd. Just before I purchased the truck from the widow lady her hubby put a crate GM replacement engine in the truck. They had used the truck for their 5th wheel and spend a few years travelling around the USA. Looking for any and all information and reference sites anyone can point me in the right direction. Not having much luck. Some sites are blocked over here (Dubai) so it is always a try and see if the sites work. VIN is 1GCHC33M4BZ100546 Appreciate any and all info.. It is now lambo orange and black. Tan interior. Thank you.