I probably had close to $300.00 tied up all said and done. I made the manifold out of 1" square stock. Not gonna lie, it was a HUGE PIA. I spent roughly 40hrs on the whole mess. I also took great pains to get the ports to intersect the bores at the band when the lifter is on the heel of the cam. Necessary, probably not! But as I said before, this is one less thing I lay awake at night pondering.