having the Protecto Plate is the only way to truly verify any 1968 Camaro. There are several things that give you an Idea if a car is a true Z car. Leaf springs, wheels, brake booster, master cylinder, alternator. Many of those parts get changed for many many reasons. Jerry MacNeish is such a polarizing person. Especially here on the east coast. I mentioned his name at two different car shows an had people snap around and tell me he was a crook. I have no opinion either way. I had spoken to him. He was nice and took time to talk to me. He has published many good books about the cars and their special parts. I used to me active in spotting fakes, but have focused my attention on other things. As stated earlier, the seller should have Jerrys report and should have NO PROBLEM showing you and providing you a copy. Also I would personally call and ask Jerry if he had ever Verified the car. Lots of fakes any more. It make me mad that people twist word to lie, but not lie in their eyes about a car they are selling. It has become a free for all, with buyer beware your problem. I am by no means an expert, but have learned a lot buy reading the good and the bad stories. Arm yourself with knowledge and go with your gut. THIS IS HANDS DOWN THE BEST CAMARO SITE ANYWHERE. I had owned a 68 Z28 RS M22 4.56 posi car. It had the protecto plate. I had been wrecked so the engine trans and disc brakes were all gone. The interior was removed, including the glove box door with the 15 inch wheel sticker. It did have the original 4.56 posi rear in it with the 4 leaf springs. I paid fair money for it and spent plenty on it. I was approached by some one who asked if I would sell. He caught me at just the right time. I sold my most attainable dream car realizing there are more and I can come back to that someday. I still own 4 first gen cars so no big loss for me. I took a quick look at the car and see many of the special parts missing. All I can say is arm yourself with knowledge and try to back up anyones statement.