About the same for any year cj. look around the steering gear box on the frame for cracks, around the spring mounts on the frame for cracks. The 76 did not have a fully boxed frame, well, some were and some weren't. The 76-86 frames should be fully boxed but there were some left overs that went out the door with the non boxed frames in 76. There is nothing wrong with those frames, just more prone to crack. If it is a renagade model it should say on the side of the jeep, and somewhere in the interrior. Its about like telling a wrangler sport model from a sahara or islander, other than it being painted on the side you cant tell. There was a few slight dif with the renagade but I dont know what they were.