Square burban rear inner wheel well

[Ice&burban]

I have a 90 suburban and live in PA. Snow, salt and that pre de-icer stuff that PennDot puts on the roads. Boy, does it that **** eat up vehicles. My rear inner wheel well are rusting away (one fell out). Went to look at another square last night, same thing on rear wheel wells. The truck is solid, besides the rear wheel wells and panels behinds the rear tires. I have found new wheel wells for pick ups/blazers. Has anyone tried to fit the blazer wheel well on a suburban? I have search everywhere and I can't find a suburban rear wheel well. Any help will be greatly appreciated.