Made a mistake on number of holes. I used this hole saw made by MikeSr,
a 1.5 inch hole in the end plate (around teh tube), tube removed, 1.5 hole in second plate tube removed and 3: 1/2" holes in second [plate, some do four, I messed up on placemnt of first hole so kept it uniform both sides.
Shot a little heat paint up there to dress it up looks nice for those who feel compelled to lay on the ground and look into my pipes!
