1968 ad 
Some of the rarest, much harder to find than the pricey MCM caps. Notice the added (oil seal?) peices to the rocker shafts in the ad as well as the late model spring steel cap retainers from a 9-bolt head triumph added to the tops of the preunit rocker box.
Right ON!
ReplyDeletecool, I have some of these and always wondered what they were.
ReplyDelete