Sean, it is my understanding that all the early heads from 58 till I believe 64 were like this, even the 64 Max Wedge heads that I have. If I am wrong i am sure some one on the list will will point out my error. Say do your heads have the 4 bolt valve covers? If so would you like to part with them. Hope this helps. Nico Over 64 Plymouth Sport Fury 451 63 Dodge 440 Wagon 63 Dodge 330 Max Wedge clone ---- Please address private mail -- mail of interest to only one person -- directly to that person. I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks! '62 to '65 Mopar Clubhouse Discussion Guidelines: http://www.1962to1965mopar.ornocar.org/mletiq.html.