completely forgot about this thread, smh. Too much going on. But this was thrown on the back burner. I had found one solenoid that actually was correctly rated at 300hz operation. But it was so small, it could not bypass enough flow to be trustworthy. So dropped that.
I then actually did some weird testing with a VVT solenoid from one of my old mazda engines from my TT car. Sure enough it worked. But never got around to making a housing for ports on it. But with MHD coming with the Native 3port, i never picked it back up.