The real trick is to make absolutly sure that both carbs are from the same application. I had an issue with that buying re-mans. Both were supposed to be the same, part number was correct, but one was a Chevy carb, the other was a ford carb. The re-man company that they were soruced from is no longer in business. There are some on here that will tell you to use carbs for a 216, and modify the manifold to put the bolt pattern to the narrower spacing, especially for street use. I will not disagree with that, as using 2 carbs for a stock application is overkill, and can be difficult to get tuned correctly.
As far as what brand/type of carb to use, you'll get several answers, with the Carter YF, Holley-Webber, and Holley-Carter being the common suggestions. All of these are good choices. I'm using Holley 1904s, as I mentioned in the PM, which is also a good carb, though you'll have to most likely hunt those at the salvage yard and rebuild them yourself, like I did. The advantage to doing to overhaul yourself is that you know for sure what's inside, unlike a re-man (see re-man issue above).
