I removed these heads from a 1992 300zx Twin Turbo 5 speed which the engine which was hydrolocked. The customer had 96k on the cluster when the engine was replaced. These heads have just been cleaned, pressure tested, and checked in case they were warped. Local machine shop said everything was good except two of the cams which are pictured. They have rust due to sitting. So I am only guaranteeing that the cylinder heads are good, not the cams. The valves springs, retainers, and valves are included in the auction, but have been removed due to the heads being checked at the machine shop. They are also in good condition. I will include the receipt from the machine shop for proof of the work being performed. I will also include a set of used lifters, but I recommend that you install a new set on reassembly. Not pictured are the sprockets and caps for the cams. These and the appropriate hardware will be included as well.