Fueling & Injection - Building a 650rwhp system

I am currently looking for a fuel pump that can support 650rwhp N/A for my LS7. Running a stump tank with feed and return lines. I am wondering what would be the problem with connecting a A1000 Fuel Pump with the wires that were ment for the stock fuel pump. Would that work and be effective?
What do most people do with the wiring when running this kind of a pump?

The factory wiring will not properly control that pump, or anything larger than the stocker for that matter.

Let me know if I can help you out with a good external pump/system. I have a few options for a very reliable - street friendly external setup.