Not in NJ but out in PA: 3 locations: Allentown, Pennsburg (Quakertown) and Hazelton, there is Harry's! (
http://www.wegotused.com/) Always see 2nd and 3rd gens, a few times saw some 4th gens. Inventory changes fast (Atown-1,000 cars/Pburg-2,000/Htown-3000+). A bit of a terk but always had good luck. $2 entry and they check your toolbox. Great place to get good, cheap parts! Edd