My guess, from what I understand about 1st Stages, is a resounding no. Nothing about the inner workings of a 1st Stage’s lp port(250psi) could conceivable be done to altered it to accommodate 12-13X it’s former service pressure.
I haven’t done any searching for one, but I think a "splitter" type lug may exist somewhere to give you two hp ports off of the one.
I hope I am being accurate in my presumptions...and that they help.
~Will