how much can it handle?
-4 you should probably start looking into a -6 setup once you go bigger than 275-300.
As for what you need...Bottle nut with -6 fitting, -6 line, -6 fitting on the solinoid, possible a larger solinoid and larger line going from the noid to the plate.
As for what you need...Bottle nut with -6 fitting, -6 line, -6 fitting on the solinoid, possible a larger solinoid and larger line going from the noid to the plate.