eBay replacement 2bbl carbs

It seems like a good value. Better idea than a rebuilt due to new parts. Putting a kit in an old carb may not always work 100%, old carbs have wear in metering rod piston bore, throttle shaft, and top distortion.

Looks like carb is for 66-73, you will need to block a few ports for early applications, or add evaporative control parts.
Metering rod piston can be replaced with a new one. The throttle shaft can be re-bushed. And "top distortion" you mean where the top of the carb mates to the fuel bowl, the surface can be sanded down on a belt sander. I have not done this on my BBD yet (resurface)...but I may need to. As long as you have all the tools, all of these should be able to be done for around $10 in parts.
New parts on a new carb doesn't mean "Better." Your better off rebuilding an old one.