Now all you Pontiac fans know that there never was a convertible version of the 1981 Firebird Formula or the 1981 Firebird. Well, at least not officially. I read over at http://www.auto-power-girl.com/cars-news/2010/04/27/pontiac/4303/1981_pontiac_firebird_formula_convertible_found_on _ebay.html about a guy who modified his 1981 Pontiac Firebird Formula into a drop-top version. He is selling it on eBay for an asking price of 8500 dollars. What do you think? Is it worth it?