Venting...

Drill a couple holes, in the non vented cap....Edit: forgot you are going M.P.I ...S.F.I..... At this point,actually Doug...? What does your calibration tuner ,recommend..? Did him, or yourself, pick the vendor, and the part...?
In typical scatter brained fashion I forgot to mention this to Ernie...not my wife but the tuner. Will talk to him about it when I go pick up the Tamale pot. He is tight welding a stainless cylinder onto the expanded metal grate for me.
Will be M.P.I....plan on using as much factory stuff as possible.