1999 spark plug blow out

didn't see this on the sight. My 99 blew a plug on a road trip. I disabled the injector to finish my 600 mile journey.(a bit loudat 70) The dealer wanted $3500 to put on a new head, said it was a common problem. Bought a kit from Lysle and put an insert in in 1 hour. I carry the kit with me on road trips as I figure I have 7 more to go