Changing Plugs - '93 JGC V-8

It has probably been 40 years since I have changed plugs on one of my
vehicles. Primarily because when I was working I never kept a car
long enough for it to need new plugs. My '93 JGC V-8 has 90,000
miles, and it is time for new ones. I thought I would just do it
myself so I bought a set of plugs. Then I had second thoughts and
checked with a couple of independent shops, and they both wanted $60
just for the labor! The Jeep dealer wanted even more! Am I missing
something here?

I know on my '67 GTO you had to put it on a hoist, remove the front
wheels, and go in through the wheel wells. The JGC looks pretty easy.
Maybe the air cleaner tube needs to come off, but other than that, I
can't see why it would cost $60 to remove and install 8 spark plugs.

I see that there are little metal sleeves around each plug, and the
plastic cap has a ridge that kind of covers the sleeve. Is it OK to
pull on the ridge to remove the plug wires? Or do you need a special
puller? Can you just leave the metal sleeve in place and take the
plug out through it? Thanks.

Dick