Factory Spark Plugs?

I pulled out the spark plugs in my car, a 3.8L 95 camaro. One end was a black boot, and the other was a metal boot! Is that factory? Or is that an aftermarket spark plug? It looks complicated to get to the spark plugs that are way in the engine, so do i have to get to them by going under the car? Jacking it up etc.? Thanks!
Jason

Jack the front of that sucker up....rest it on some jack stands, get a good flashlight, and a lot of patience and beer. Have fun.....my first time took me a little over two hours to do plugs and wires. My advice for the middle cylinder on the right side is to get a 2" extension with a universal adapter. That way you can clear the exhaust manifold and have room between the fender. Don't worry about taking off the exhaust shields. They're really not in the way. Like I said, have fun:D