"Boulevard Series"? i don't follow HW's all that much (my friend Bruce does tho) but I know that the "stock" model is the one i bought a small carton from DMC of back in 2009 (i think 2009).
anyways ... if U are a HW fanatic & know-all, perhaps U might have some "Treasure Hunter" cars that I am looking for ... for my friend. :-)
I have a few treasure hunts but already listed my extra's a while back as well. Johnny lightning also made a diorama with the time machine AND Doc Brown's van but I never found one at the stores. They go for over $75 on ebay. Do aan image search and you will be impressed
I got that nickname from my best friend in 2000 because he loved hot wheels but I liked JL's better (Revell and ERTL too) so I used it as my handle on ebay and every collector site I belong to since 2001.