OK ladies and gentleman. Here's the word from Bowman Mountain:

Frank's rings

* are made from fine graned cast iron and heat treated to 1,850degrees F
* come pre gapped to his bore gage or ungapped
* end gap recommendations on engines under .70 c.i. - .001", .70 c.i. and over - .0015 to .002

I'm buying all of the information and at least two rings. I guess I'll have to tear down my new Enya SS.40BB to see if it's ringed and order one for that too.

Regards,
Bill