It was a 78. If you do buy the lifters, just be sure and find out any base circle requirements for your cam. It may have to be smaller depending on the lifter, guidebar setup.
The machine shop probably said they wouldn't touch it because they don't know. I don't blame them, but that is the difference between a machine shop and an experienced speed shop.
If you really want a laugh, go to a good speed shop and ask them what they think about removing silencers, resistors on ACT sensors, 180° thermostats, iridium plugs, 16° advance, etc. Wear a flak jacket.
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