That pretty much looks like it, minus the choke horn. They did a decent job of blending the edges of the cut. Maybe I'll go take a look. From what I've read the 3310 is a pretty decent carb. May not be able to use it right away but not a bad thing to have on the shelf if I can get it bought well. Get it cleaned out and a fresh gasket set in it.
WTH why not. It's always interesting to try different carbs and see what they do. I wouldn't pay much for it though you can get one on ebay for 50 bucks. A really beautiful rebuild for 200. It was cool you recognized it for what it was.