fasterpatrick Pat here's the thing with both "A" and "B" fuel systems. Both the deadend lines. Over time small particals in the fuel will end up in the ends of these fuel lines and go into the injectors. I have seen this happen more than once. Sometimes just an injector cleaning works and sometimes you have to replace these injectors. I like the regulator after the last injector. This one works the best to keep a consistant pressure to all the injectors no matter weather you are cruising or at WOT. You can get a lean condition with a or b setup. System "D" is the best of the 4 but too much extra fuel line in the motor compartment. I have run system "C" for 10 ten years and had no problems. Down the road you may add a supercharger or turbo, "C" or "D" will handle this better. Dead lines are simplier now for GM, FORD, and DODGE to do on these cars. They also rely on the filtler in the gas tank to keep the lines and injectors clean. I have double filters on my system with socks on the inthe tank pumps and small 20 micron filters in each line. Today you run 24 lb injectors, add a power adder and you are looking at 38-42. Do you have a fuel tank built for the car??? If not install 1 or 2, 255 Walbro pumps in the gas tank or get one with the fuel pump and filter in the tank already. You will need relays for the fuel pump with 30 amp fuse. This works better than most external fuel pumps Weldon pumps are the only ones that can lift fuel 24" if needed with good vacuum. You will need a sump of the tank with 1-2 outlets to the external pump. I am not a fan of having elbows and fuel lines hanging out the back of the car. Depending on what state you are getting the car inspected in this may not be LEGAL for street usage. Need to check your state laws. External pumps have problems with high "G" turns. I have problem when my fuel tank gets down to 1/4 of a tank with fuel starvation. 1/2 tank no problem and this gas helps with traction and keeping a load on the rear tires. Where is the fuel pump located one the car the motor came out of?? In the tank? there is a good reason. IMO and having this system, "C" is the best. I also believe in larger fuel lines. 1/2 inputs and 3/8" returns. These lines will also cover for any contections or elbows needed for the system. You will never run your motor out of fuel supply and pressure with this size. Over engineer is the best advice I can offer you for building your car.
Rick L.