Forgot to say that all of the securing bolts in the coil pack are required. My brother only put in 2 bolts on reassembly and guess what..misfires. Added the 2 bolts and the problem was fixed. I don't know if 3 will do it or not but if you continue to have misfires, the first thing you need to do is get the 4th bolt in place.

 

Thanks Chubbs878, I read your earlier post before we installed the coil pack and I remembered what you mentioned regarding the misfires. Somehow one the holes was totally off set like half moon looking through the hole. So what we did was to sand all the contact points using a Dremel with flexible shaft and used carbon conductive grease. Im just hoping that everything are fully in contact until we plan to try replacing the head gasket someday. I have no idea that location of the packs are very difficult to reach. I am sure someone made some cool hacks moving them apart.