Sorry, I have not been able to find any of my old photos and the lifters I did actually re-built (the older style original ones) are somewhere in my Mopar parts room, which is an un-excusable mess.

OK, the photo you posted does look exactly like what my install ended up being. Makese sense, I think we both used the same parts. Given that the internal plunger was only barely retained with the ring eye-lets I just didn't have the guts to run 'em like that. So I went ahead and ordered a new set of lifters which no longer have that same design.

I agree, I think even with these rings they provide a much harder plunger stop...but I would be worried about the lifter pumping up and if the groves in lifter are not perfectly square it would take very little to possibly pop that ring out completely.