The guys at the machine shop mentioned this as well. They had ordered one, not sure of the year, that had the ribbed side compared to the smooth side the 50-52 have between the plugs.
Ive got to thank you guys for all your help with this. I really don't want to have the wrong head show up and with all the insight offered here it sure has helped a lot.
Mark
P.S. anyone looking for a 1953-235 head there is a brand new out of the box head on eBay.
