On a positive note, they are one of the few suppliers that include perhaps the most important gasket in a valve cover replacement kit, the gasket that goes from the head to the oil supply under pressure Valve cover squirting oil onto the cam from above. That gasket in my 23 year old car was rock solid and so important - praise of course. On the negative side, I recently bought three of these and these guys rolled up the seal and put it in a little box. ALL other suppliers ship with the gasket flat on the box. So I literally had to put it back in place and put a large, flat, weighted surface on top of it for a couple of days to make it lay flat. Terrible. Also, the gasket itself felt more like plastic than rubber. Maybe it's better, but since I paid 120% more for it than others, I'm not very happy.