[cavedog57]

Thought about your set screw idea olddog. It might work on one where he barely penetrated the water jacket, but the other hole was drilled completely open (i.e.: nothing to seat the set screw against).

It seems I have two choices (well, three if you count replacement) -- TIG weld the holes closed from the bottom up then drill and tap a new hole, or simply install the header bolts with lots of Permatex Ultra Black sealant both in the hole and on the threads.

Right now I've opted for the latter as I look for replacements. First attempt worked on one hole while the second hole had a "weep". Drove the car approx one hundred plus miles (8 hot/cold cycles) and neither changed.

Just removed the headers, changed the exhaust gaskets, and reinstalled. No leaks, but haven't run it yet (tomorrow if the weather is good) but let's see what happens once it's got some miles on the tires.

Once I find replacements and get them on the car, I plan to have this head repaired (i.e.: TIG welded).