You can parallel all you want, but there is nothing parallel about your cars.
You are running a Holley blue pump with no regulator ! That pump is pre set at 14psi and requires a regulator !!! Have you lost your mind ? Do you have any idea of what an Edelbrock requires for fuel pressure ? And you wonder why your Eddy runs like crap ? Whos misguided ?
You are doing nothing but being a distraction, and mudding the waters. Its called thread jumping.
Start your own thread.