Fuel Cell Advice

Ok I have to change the tank out for a fuel cell and a electric fuel pump for my 1990 C1500. I think I have it worked out decided to go with a a sum-g3138 pump from summit I have to run about 45 psi at idle. I am running this for a LT1 now do I need a fuel regulator or not I think there is a stock regulator on the fuel rail can't remember. Better yet what all else is involved and needed in this project would like to install the fuel cell under the bed if possible. Any info greatly appreciated I am not a fuel expert as you can tell! Any pics would be awesome as well and any instructions.