[svxy]

When I changed mine for the first time it took me between 2 and 3 hrs, probable closer to two, and that included the learning curve. You learn quickly that conventional socket and rachet use doesn't do much good. You have to connect and disconnect inside the plug area using the socket and extension and forget using a socket on most of the bolts holding the wire in place, a 12mm closed end wrench works much better. The wrench makes it possible not to have to use the "through the fender well hole" method. Still if one of my plugs goes south, it will run that way for a while...my back can't take that contortion again for a while.