fire ring diameters of various head gaskets

OK....got a ROL and a Detroit/Corteco from Ebay.... one is a little better (not much!) than the old style Fel Pro I have/ the other, um, no. I forget the measurements I got, I can post them later if itll help someone else here.....
but, I met with a guy from the /6.org site for a few small parts I needed that he had// and he had an Aussie head gasket. Gave it to me, just said "replace it with another when I can, no hurry".... that one will definitely work with this head.... IF I didn't ruin it otherwise (anyway) I took both heads I have been carving on into the machine shop 2 days ago, and when he looked at the original head that I started on (and prompted this thread) I got a huge "OH,MY GAWD, what happened to the bowls"? out of him.... I also took him my new O/S valves and springs, and told him what I wanted, and to evaluate it to see if it can be salvaged, or if it was really a "practice" head. We'll see what he says. I have 1 more head here that I can use, if those 2 are beyond hope.... I never claimed to be an expert at head porting. these 2 heads were my 1st 2 honest attempts at doing so..... where I was working on a head that wasn't already deemed scrap, for some other reason.

BUT, another development. I went from "definitely going" to the Indy Cylinder head swap 2 weeks ago,, to "well I'm not sure"// after talking to @68barracuda since then. The guy I met up with yesterday, was my ride down to the ICH meet last year.... and he ain't going either this time. So I was down to "well see what I feel like in the morning", as to whether I make the trip or not..... didn't want to drive all that way to have to possibly wait in line outside for someone to come out so I could go in.... like waiting in a 2 hr line at an amusement park ride, for a 90 sec thrill..... then take something to my truck and have to wait in line again to get back in. I'd heard that as a possibility, with all of this overblown COVID bull$#!t we have going on these days.....

well I ain't going to ICH. . Basically can't be 2 places at once. I found a deal on CL that seems too good to pass up, and about the same distance from home, but in a different direction...... I'll post what I found, if it winds up being what it seems....