I have a sumped tank in my car right now and still run all the stock interior with a cage and I am stepping the car up and with my new fuel pump I need a to run a return line and not sure if I should put one in the tank or put a fuel cell in the trunk? I know I will have to take the back seat out and install a fire wall.Any thoughts? I am looking to go from from running 11.80.s to 10.50's