Fuel setup for carbed.

I have a carbed setup still using the stock fuel pump and lines, with a fuel pressure regulator. I just received a NOS 150 shot and want to get my fuel setup correct. Im gonna order some new braided fuel lines to go from the engine compartment to the gas tank and get a mechanical pump, but what will I do with the pump in the tank.
 
You should seriously consider doing a electric pump setup. The top rated mechanical pumps are in the ballpark of 80 GPH, IIRC, whereas I had a 280 GPH pump on my 347 car. (good for 800 Hp)

If you're doing nitrous, you need to do one of two things:

1 BIG pump (such as a Barry Grant 280 GPH)

Or 2 smaller pumps, one for nitrous, one for motor. (such as dual Holley Blue's)

Best setup for the tank is to sump it, requiring a $70 part welded onto the bottom of the tank. It can be a chore finding a shop to weld on a gas tank though, for obvious reasons. The other option is to get a fuel pump pickup from Summit ($70ish as well I believe, but this replaces the stock fuel pump with a pickup line-setup)

Look fowards to $500+ on a decent fuel setup, + more for the nitrous fuel setup.