Build me an Alky 440

You can have a rear fuel cell with an injected car. A Spint car is an example of a car that uses a rear mounted cell. The reason it works is because the fuel is higher than the pump (and the car is really short) but it can me done. For a rear cell application you can use a high volume electric pump feeding a tank near or in front of the belt driven pump. This tank is easy to make, I have built them before with a box made of steel or aluminum then I mounted two Holley center pivot float bowls (with alcohol needle & seats) to it to stop the filling of the tank when it was full. The belt driven pump then feeds off of this tank, when the fuel level drops the electric pump starts feeding the tank again. This way you can have the fuel capacity of a rear mounted cell.

Something else to consider if you use the stack style injection. The injectors can dribble bad when the car is not running and there is residual pressure in the lines. This can load a cylinder with fuel then if you crank it over it can hydra lock on you (this messes up stuff). This is why you see guys rotating motors backwards "backing then down" before started to clear the cylinders of fuel in the cylinders. We do it on our Sprint cars everytime just to be sure.