head

Hi, Could anyone tell me if there are there any markings on a stock cylinder head that match it to the block? Recently had someone do a valve repair and within 2 weeks the head gasket blew. I am no doing the repair myself, but prior to reassembling I would like to know if he potentially...

My 2007 Element EX, ~52,000 needs help! I went to change my oil and checked the rest of my fluids as a matter of habit, only to find that my coolant looked like coffee with cream. The hose in the overflow tank has a slight sludge buildup on it that is the same color. Now, I *fear* head gasket...