Connected Battery backwards...ouch!

Cudaman, I followed the electric pump to the Oil Pressure Safety Switch, this then goes up under the steering column, probably to the Ignition, which runs then to relay and so forth. The sending unit is below the safety switch. It's just a brass fitting with copper tube running inside the firewall to the guage.
I don't have a chock on my Carb, some reason he took it off. This car is setup for drag, and I want to tone it back down. True about the pump, it holds a constand 6 psi to the carb, and when i'm gently accelerating it sputters and spits and bucks like a horse, probably because of the fuel pump. What are my options to take this thing out? And like you said, if something breaks this is going to shoot gas everywhere. Thanks for your ideas.