So,....on the head issue, nuthin wrong with a Hemi, right? I coulda been stubborn (the wife reminds) and held out for another set of Poly heads. However, instead of buying more iron, why not use some of what I have. Today I started on the port matching. Kinda satisfying job. After that the heads will go to a local Hemi Head hero for modest port cleanup and valves, springs, etc. Also while waiting for the machine shop, I decided to start on the timing cover modification. Although you can buy one from Hot Hemi Heads that accommodates the SBC waterpump, that's more $ and modifying the stocker is another satisfying project. I'll have the seam TIG welded by a friend who has a better "hand" than I.