Does the VIN in the windscreen not match the firewall partial, last 6 digits?
Does the cowl build plate match the VIN in minor details? Does it say it's a TA or a Formula, or something else?
Don't confuse the build plate on the wiper cowl that says it's a Firebird, they all say that. Does the windscreen VIN start with 2W87 or 2U87 or something else? Cowl build plate has options of WS4 or W66 or similar?