I am so pissed. My z6 head is gone. I was doing a compression test on my car on sunday and right when I finished with cylinder one I looked in side the spark plug hole and guess what, who ever had the car before me stripped the spark plug thread and had added a hela coil. Now the freakin coil is stuck half way and I can't get the coil back in or out. So when I put the spark plug in it sits higher than all the others. Can this be fixed or should I start looking for a new head? And if I need a new head where could I find a good head for a good price?(online or local im located in phx.). Any help is appreciated thanx.