Indy heads single water crossover /single plane manifold.

I am always learning..... and I will be the first to tell you that I don't know it all and learn something new each and everyday. Thanks to everyone for their input. Timing is everything! Its the small technical things that make the difference in overall performance, mileage and overall drivability. I am going to look up some info from Lee Shepard on this.....

I would have to take the manifold back off and drill & Tap it. Not that big a deal but something to look at getting done as this supplies a spill back for the water pump until the thermostat opens otherwise the water pump is deadheaded yes I get it .