carburetor - does it really matter

[Willv]

I want to replace my carb - 2029223 on my 69 CST/10 350 engine AT with another Rochester rebuilt carb. Only problem is that I can't find another freshly rebuilt 2029223 on line, not even a 2029224. My question is, does is really matter if the carb is not the same #s? As long as the linkage is correct, and that the choke be the same, right? Of course it would have to mount correctly. Couldn't I just plug some of the vacuum ports if the new carb came with more than what mine brings. Oh.. and I don't want to rebuild mine, I need my truck and can't wait for someone to rebuild my carb. Thanks.. Will