Do you have heads with two vent nipples or just one? If two, you might consider a crossover tube like I made and ditching some unnecessary water lines. Made from 5/8" thin-walled soft aluminum tubing.
Note how clean my water crossover manifold is. I actually went to thin-walled Neoprene tubing for the vent T hoses. You don't need a throttle body heat system.
Turbo water fittings could come straight out of housing?
Glad to see you back on it.