"If you do not have an aftermarket MPI, then you will need to purchase an additional fitting that is -6 Male Flare to 5/16" hose barb and utilize the rubber portion of your OEM line to finish the connection."
Then you could change out the HPFP cap.
And then I guess I'd have to make lines. It's a lot, I get it. Probably not worth it if you're not pushing max power. Was just curious if the fuel lines really only make sense if going MPI
I can just run the PR lines into the stock rubber hose like they suggest and the stock rubber hose remains secured to the stock HPFP cap. Seems to me like upgrading 3/4 of the line and keeping the existing rubber hose to the HPFP still creates a restriction of flow.