As far as I know, no one makes them. I heard the ones put onto 68-70 Charger are just a modified one that came off of a 1st gen Camaro. I would assume most people would have to modify one that came from another car. I know a member on here, in the Hot Deals sections, sells them for Cudas.

Edit: Quick google search of a front spoiler got me this. It is a Charger though. What kind of B-Body do you have?

http://www.dodgecharger.com/forum/index.php/topic,69474.0.html

Just copy the entire link and paste it above.