Interesting, I've always had to have those ones recored. Those rivets look odd, I suppose they don't have originals and fabricate their own plates. I see it fits the one half, how about the other? It's hard to tell from your shots, but those cores look to be on the wide side. I hope I'm wrong. You could measure the old one and compare. If it works out for you, let us know where you got it. Also, the shop that did my first one, pressure tested with air, it passed. I installed it, it failed. I removed it, tested it myself with domestic hot water 120°c +-, found the spot, brought it back. They called saying "we tested it and it's good". I was steaming! So I went down there and asked to see it tested. They brought me to the back where their big water pool was and hooked it up to air and said "see, no bubbles". I said "but it's not hot". They said "that doesn't matter". I said "obviously it does!" So they hit it with a tiger torch quickly and re-submerged. Bubbles rose to the surface from the spot I had circled. They apologized and fixed it, again. Then I installed it again. Point of the story, test hot!