Need 273 and 318 carbs

I am looking for a 2 bbl carburator for a 64 Barracuda with 273 that works well. i rebuilt the one I had, but it was missing parts before I got to it and I couldn't make it run well. Also, I need a good 500cfm to 625 cfm 4 bbl carb for a 318. I am in eastern PA. Priced reasonably please. Thank you.