Oh there is no early 22r head pictured.
Top pic is a 20r head exaust ports, 2nd pic is a short deck 22r head, as well as the 3rd/bottom pic, whic is the same head.
I would edit my post, but I still can't do that...probbly couse I played the violin in da band.
If this info is correct tallchevy(havent read your link yet) it should be a sticky.
