Well, after being a "lurker" for so many years, I finally picked up my first 6.2L truck about a week ago. It's an '83 K2500 with a J-code 6.2L and an SM465 and the truck has about 64,000 original miles on it. It has the original 9G glow plugs in it and I was wondering if swapping these out to the newer 11G or 60G glow plugs should be one of my first things on the "to do" list. Also, there is a local AC Delco dealer here in town and they have both 11G's and 60G's on the shelf. Do the 11G's have the swelling issues that the 9G's have and should I just skip the 11G's and go straight for the 60G's? Thanks a lot.