I am going to run a new 3/8" fuel line to the throttle bodies and use the original 5/16" line for the return. I haven't decided where I am going to put the fuel pump. In the tank is preferable, but in-line is easier. Wherever it is it will be well filtered with pre and post filters. This is my fourth fuel injection project on engines that were not originally injected so I am well aware of what is required. I have a very cool idea for the fuel pressure regulator. If it works I will show it to you later. If it doesn't work I will destroy the evidence as usual.