I would stay clear of ebay unless you are very knowledgeable on Qjets. I have seen lots of Frankencarbs there. The ones with a Pontiac top, Oldsmobile center section, and a Chevrolet base plate. The different GM brands had different ideas on how to obtain good idle quality and when you mix and match the parts you might end up with a carburetor that will not idle correctly.
For the same reason stay clear of carburetors with corrosion visible. Corrosion in idle passages will ruin the carefully machined orifices and idle quality degrades. The more corrosion the more degraded. The carburetor shown in the link is only good for a few parts. At best it's a $5 core.
https://www.ebay.com/itm/304646959851
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help.
RIP Bob Parks.
1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo
If it breaks I didn't want it in the first place
The WMB repair thread
http://67-72chevytrucks.com/vboard/s...d.php?t=698377