I bought a two barrel adapter from Summit Racing.I have been looking at carburetors on ebay and need some advice.Would one of the Holley 350 cfm carbs be a good choice for a stock slant? It's a 225 in an 87 D100. What are the cfms for a BBD? Any one have any other suggestions? I'm looking for cheap(aren't we all) and easy to install,I want something that I wont have to modify the linkage.It is a 4 speed/overdrive so I don't have to mess with a kick down lever.I can get a two barrel off a 318 in the same year truck at a local wrecking yard.would that work?I'm planning on changing the distributor to one with vacuum advance and will need ported vacuum to make it work,so will need a carb with it.I still have most of the vacuum lines for the smog crap.I need to make it look somewhat stock for IM testing.
Steve

The factory Super Six two barrel is 285 cfm (Carter BBD)
Converting to a Super Six is a pretty good way to go.
See this article for more info:
DD
http://www.slantsix.org/articles/supersix/article.htm