Exhaust stud repair., WTF???????? Options

[BiG bOgGs]

This weekend I am doing a replacement of the push rod tube seals, my first valve adjustment, a repair of the pulled exhaust stud on the driver side, and a permanent plugging of the air injection holes with a couple bolts and a little JB weld.

This morning I put the teener up on some ramps and crawled under her to remove the exhaust from the heads so that I could re-tap the one loose stud and replace the gaskets with a set I got from the good Dr. in Atlanta. When I got under there, I saw two allen bolts in place of the nuts and studs I was expecting. And when I unscrewed them from the head I pulled out the timecerts that they were inserted with. plus, there was no copper gasket. Here is what I have now.





I will now have to cut the bolts in order to get them off of the exhaust, and as you can see in the one pic, they had to split the sides of the exhaust just to fit the bigger bolts. I was able to tap the head with a M12X1.5 tap, so I believe I will be able to put some threaded inserts in there along with some new studs, and the one stud I was doing this whole procedure for in the first place looks like it will be able to be re-tapped for the 8/9 studs I have on hand, but I might have to go to a 8/10.

At least it is a beautiful sunny day here in SW FL.

Any suggestions as to things I might consider as I get ready to put this bit of Porsche happiness back together?

Jim