Sorry to hear about your loss dude. I think it's highly unlikely that you'll ever get them back, and hopefully the vehicle had full insurance so that the contents are covered in case of theft.
Pawn shops (at least our local ones) are required to hold all items for at least 30 days before they can put them up for sale, so they wouldn't show up there for at least a month. Local classified are a possibility too, although I wouldn't count on it. I'll pu tthe word out to some of my homies in the Heights. They hear about deals on hot shit all the time.