Info on '71 Formula 455

Found a 1971 Formula Firebird. The badges say ‘Formula 455” the VIN pulls up it being a 400 car. Were there any 455 Formulas in that year, or is it a fake? If it is for real, what does anyone else’s VIN number(s) pull up as?
ANY help on " 1971 Formula 455"s would be great!
If you know any info, you can email me privately at [email protected]

I can't say for certain. I also tried to e-mail but had errors. PM me here and I'll point you to the right people.

Jim