Not mine and it doesn't mention if it is a 2bbl or 4bbl. You don't see these often and this one looks very good. http://phoenix.craigslist.org/nph/cto/4098984959.html
They came from the factory with a 2 barrel Rochester 2GE carburettor, but you could get the optional 4 barrel carburettor for just US$ 50.00. From the model year 1978 Buick brochure: