I've used a remanned motorcraft carb (to replace the motorcraft carb that came on my plymouth /6;-) I had to steal some parts from the old carb to make everything fit/work. You get what you pay for! As I removed some screws, they just broke off! If you plan to do any tuning, you'll want higher quality. If you just want to bolt ok something that'll work ok... They're ok.
By the way, if your looking for a used remanufactured motorcraft 2150 mounted on a slant 6 intake, I'll sell you one cheap;-)