Rodey70, there are many way's you can go. If you want to stay stock try a few places like: http://www.customrebuiltcarbs.com/ http://www.customcarbs.com/ http://www.blake.com/oemcarbs/index.htm
They all offer a variety of stock options. You could send yours as a core and get a stock replacement, or upgrade slightly...
Or if you stray from stock you can get a Holley 2 bbl or go with a new intake and carb. Either in stock form or aftermarket... It all depends on what your looking for and what you prefer!

Good luck - Brett - 67 Drop top 455!