71 build plate?

I purchased this 71 convertible 4 speed last summer from a fellow in PA. It does not have power windows, steering or air or brakes. It has a cut off switch (battery) located in the middle compartment of the back storage area. Would anyone know if this was "stock" or could it be one of the race cars sold in that year. It has a 454 in it with a M-20 tranny, the fellow said motor had been replaced and rebuilt by the previous owner. The tag on the 4 speed plate says 425 hp? I cannot find the metal build tag anywhere, did the stock 71 have a metal tag attached to the engine side firewall??
thanks for any help,
Ron

|UPDATED|2/4/2004 6:40:35 PM (AZT)|/UPDATED|