I got one ~1-2 years ago. Had the old chunky couplers.

Would this one not be a micro trains style connector?

http://estore.bachmanntrains.com/index.php?main_page=product_info&cPath=66_70_81&products_id=234

I need to replace my couplers, just waiting on stock coming in.

I had to solder in my decoder, fairly easy to do, unfortunately it wasn't a socket/drop in.