The value is what you can get someone to pay. If you can attract someone who wants one of these particular cars, it will be worth more. The post cars are more rare and unusual and, in my opinion, will be worth more than a Malibu SS in similar condition. Especially if the interior (like others said- door panels, seat upholstery, and rubber floor mat not available new) is in decent original condition. The hardtop SS, of which I have, would be worth more IF the interior, again, is original and OK. But if the interior has mostly been replaced with Malibu parts, like mine, it probably isn't worth much if any more. Unless someone is looking for one and really wants yours. IMO. von