It is also (I found) quite a simple ,goof proof procedure and of course you can repeat it to confirm and test a known-good vehicle to verify the kit works.
I sense a call to Hoffman Machine may be next ?
This may ease the pain?
https://newsite.hamheads.com/
https://newsite.hamheads.com/2017/01/16/986-996-porsche-cylinderhead-cracks-explained/