I have a couple of tour issued TM 360 driver heads in my closet. These were called T-dot heads and at that point in TM history, there was a significant difference between these and the retail heads. They were referred to as "pull face", before the inverted cone of the R500 series. Very solid head at impact.
It is fun to try some of those earlier heads. Not as forgiving, but hit on the screws, euphoric.