Moog last year was to provide a lower arm for the C-10, the r series loaded, it never happened. Even lift spindles for the C10 have disappeared. I have the part numbers somewhere, they showed it on there site. It seams that the support for the 3/4 control arm is dead. It all comes down to our lower control arm shaft, it was only used for our vans and the 2WD Suburban and Blazer. The C10 uses the 1.5" shaft and shares the same arm. It makes no sense as the 3/4 is the most common van. Our 2 inch control arm shafts are rare. In order to survive we may need to change to the 30 arm and ream out the spindle and drill out our crossmembers for the 1.5" shaft, It is the most common of the GM trucks 73-96. Only our vans carried out the front end design till ' 96, C truck changed in 88. PM if you really need a set, it bothers me that your driving on welded BJ's. They came off a late model conversion.