In the early 1970's, when the Hemi was gone from NASCAR, Richard Petty had some of his best seasons. He used the 346 heads on his cars then. I agree that the 452 heads, which came later, are the best common heads. ---- 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.