The GE plate adapter is top notch. If I built a turbo car of my own I'd run one. If not run a -4 line at 20" looped to a t on the firewall. Directly across from the -4 in run a -3 to the turbo, run the pressure switch or a pressure gauge off the perpendicular section. Make sure to use a 1/8" BSPT fitting in the block and try to avoid an npt fitting. Honda blocks are threaded in bspt pitch and when you run npt fittings you are basically cross threading them in.