[Fordestes]

I took a 2 inch thick piece of aluminum drilled the plate while using the head as a bolt pattern then took an old piston that had a small centering hole in it then drilled out the center and sharp pointed a bolt and screwed it in the center hole and after bolting the already drilled plate to the block I tapped the piston with the bolt centered in the old piston as a pilot hole to use as a starting point, scratched the diameter of the cylinder bore as a reference point then drilled and bored a 3-3/8 hole for the cylinders , bolted it down and used a neoprene gasket as a seal then used it as a pressure tool and a torque plate. I had to have the plate surfaced to get an accurate even torque and seal the pressure head gasket, I later counter bored the hone plate to accept allen head counter sunk bolts.