HAOXIN Double Outlet Shower Manifold with Shut Off Valve,Suitable for Dual Sprayer Showering System,Chrome,STC03

will this work with a tub and shower with the diverter o tub spout?

item started spraying left side of main tube

Can i get the manifold shipped to california? i know california has regulations to limit shower heads to 1.8 gpm, can i legally buy and install this?

its leaking on the left end of shaft not at the connection think end is pressed on cant get it off