Mis firing issues on my truck! I bought these heads, timing kit and other parts for the top half for my engine. I got it installed on my engine,ran the engine literally 10 minutes. Came to find out that compressor ring #3 bad. Anyways heads are new with timing kits included, I’ll add some pics on the timing later. But all good need gone. Paid over a grand for these at the dealership. $300obo