Be careful with the selector valve. I don't see a pressure rating on that one.
Older TBI units ran a much lower pressure at the selector valve because they drew through it rather than pushing through it.
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TBI units came out in '87, fuel pump in tank(s), ran 9 - 13 psi. That was at the end of the body style, dual tanks & switch valves could be a pain, much simpler with single tank.
