How hard would it be? What would the cost be? Would it be worth it? What if you were able to charge $5-7K more than a regular Tahoe/Yukon?
Take a Z71 Chevy Tahoe/AT4 Yukon. Make it a 2 Door, with drop down tailgate and swing up rear window. Give its a complete rubberized floor from front to cargo area. Optional hooked in carpeted mats only. Raise it 3-4 inches, while giving it standard Hankook Grabbers All-Terrain on 15-16 inch wheel, spare behind rear seats . Call it the Chevy Blazer K5/GMC Jimmy Heritage Edition and use these emblems (below), pitted with a hint of rust straight from the factory and let people know they've been sitting around in the back of the warehouse since '72. If they haven't been, just lie to 'em. They won't care cause they'll think its cool.