the weber dg series has been illegal for california smog since the early 80's , weber makes a carb for early 80's smog that has egr controls, an idle control, costing richer solonoid and the like....they're not cheap...but they do exist.
in fact there's one on e-bay right now....
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33550&item=7945446503&rd=1
i'd try looking at dealer options for cars back then (late 70's-early80's)and keep in mind that the holley 5200 is essencely the same thing.... they came on old pintos.
there's a 2 barrel solex that came on the older bmw's. it's along the same lines too for adjustability and simplicity
in the junk yards here i've seen jaguars, mg's, merkurs and the like.
i've never known a car that came stock with a weber though......
