choke for Holley 1 bbl

Dan's right, I've swapped just about every choke/carb combo and was able to get them to work with a little tweaking and by adding or subtracting some sheet metal to the choke well opening. If it is a complete mix and match, I usually start with a completely enclosed choke well and if I find the choke is coming off too soon, I use the tin snips to make a tiny window and widen it as necessary.