Thanks guys for all the info. I found a reputable shop that does honest work. The shop found 2 slightly bent exhaust valves in cylinder #4 and had the head sent to the machine shop for the proper repairs (new gaskets, valve guides, exhaust valves). Parts and labor cost me about $2000, but it was much better than the dealership charging me $5000 for a entire new cylinder head. Plus, I trust this shop much more than I did the dealership and since then has been running like a new car.

 

So the stealership was correct with their diagnosis?

 

i have an ap1 head, perfect shape, $450 +shipping and pp