Carburated Fuel system HELP

I have a 92 lx that has been converted to carb. i'm running a holley black fuel pump, i am going to run a seperate pump for my nitrous system, and my question is,, can i T off of the fuel line going in to the exsisting pump, run it back to that pump and then just run another ppump and line? Basiclly i need to know if one supply line can feed two pumps.. any help would be great, i know very little about carburated cars,
THANKS

Carbs need volume where efi needs more pressure. How fast are you trying to go? 2 pumps can be run off the same line but I would suggest running a larger fuel line. I use -10 from tank to reg and -6 from reg to carb.

Why not just upgrade to a A1000 pump and not have to worry about an extra pump?