Here's the website...they make A body, and B-body tanks too...

http://www.hotrodcitygarage.com/indexA.html

I found out about them on a Moparts sponsers website:
http://www.jimkellemsmotorsports.com/

They mentioned that they are a dealer for them....but since I wanted to customize mine...I just ordered from the source to make sure it was done the way I wanted it.