It's the two end studs on each end--four studs per head. At least that's how it is on my motorhome heads, I found out the hard way. Maybe car heads are different? Sean Herb wrote: > Other common problem both end bolts (Front & Rear of flange) should be studs w/sealant on threads because those holes hit coolant! ---- 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.