Originally Posted by
KevinD
I'd buy the heli coil kit and use the same size as whatever the stock bolts are. Iirc, it was an exhaust manifold bolt that broke off in the head?
If you've never used heli coil, watch a couple vids. There's a couple tricks to using them, especially in a blind hole, but they absolutely work if installed correctly.
Off for first visit to new chiropractor today. Miss my old one, but she retired to have a baby a couple years ago. This one is closer, and comes highly recommended so will see.