I bought these from a seller on the other CB450 site and I don't think I'll have the time to get them working on my bike after all.
They're a pair of Sudco 32mm carbs rough jetted for the CB450. They include a handful of jets & needles, UNI air filters and a 1/4 turn throttle.

To get these working bolt them on, make a new throttle cable and fine-tune the jetting.

They are "Handed" with the idle screws pointing to opposite sides, not the universal ones you see all the time.

According to the seller he bolted them on and got the bike running but didn't have them on for long. They are in perfect condition and I have no reason not to believe him - no scratches on the slides or anything.

I paid $250 including shipping, I'd like to get the same.

Thanks!