What year carb and motor? Is it a E2M DualJet / VariJet, or an older 2GV, etc.?
I don't believe any of the carbed Buick turbos were 2BBL, only 4BBL. Not in the 80s at least.
If it has one of the E2M DualJet carbs, take a look at
http://www.tocmp.com/manuals/Carbs/R...vice/index.htm
If it is one of the earlier 2G* carbs, see
http://www.oldcarmanualproject.com/m...ual/index.html
Note that the newer ones have an internal TPS to signal the ECM, as well as a plate with an electronic grid below the carb that I believe was used to heat the carb and aid with idle and emissions.
Also see
http://www.oldcarmanualproject.com/m...0-86/index.htm