Specs on AC fuel pump
 

I need help finding the capacities of a AC fuel pump. It came out of a tank that my son picked up for me a couple of years ago. It is a AC 6441584. The number 2680-2 is also on the pump. I am installing it in my 71 C10. I know it came out of a Blazer but don't know the year. The anyone point me in the right direction to identify this pump?