Harley Davidson shops have some neat, trad looking stuff. The B31 Guide accessory old GM back up lights make super turn signals on fenderless cars.IMO
Try this guy.... http://www.taillightking.com/ I stumbled across him when I was building my skoot. Later...... Archie....
some of the koolest stuff I've found was in large truckstops those guys are INTO anything that lights up.......or just walkin swapmeets..in your case I'd be hittin Pomona swapmeet this weekend