Here is an unfinished one of my son's '82 with the Lower Forward Arm only. The tire is a 275/45r20 in this picture....
Here it is sitting on the weight of the truck at ride height. He is running the coils spring, not an air bag. There is a billet retainer that is available separate to use coil springs insted of bags. The tire is a 245/45r20 in this picture. We will end up running 255/40r20's when we get it on the road...