[COPO]

You can pretty easily check one of the hidden vins by removing the cowl panel. Can't remember maybe 4 screws need to be removed. There is a chance of scratching some paint when the panel is being removed, so you'd better be willing to buy the car at that point and make that the final check. The other hidden Vin would be extremely difficult to check on an assembled car and no seller is going to let you do that without a large non-refundable deposit in place. The TT looks good. One of the Camaro sites probably has diagrams to show you the hidden vin locations.