3X2 carbs for 241 hemi and 8 3/4 center

Ok, here's what you need to know. You'll not be able to use Carter BBD's on that set-up. The footprint and even bolt pattern is the same (3 bolt can be drilled for the 4 bolt), BUT, the Carter has it's fuel inlet at the front center of the bowl, and so the center and rear carbs will interfere with eachother. You need to find Strombergs, which at a glance look just like the BBD's but have the fuel inlet on the side of the bowl.
I've got one good, fresh Stromberg on the shelf..originally from a 66 318. It's got a good choke assembly, so it would make a great center carb. PM me if you need any other info.