How do I change a 1996 GMC Jimmy Spark Plugs?

Ok first off if you haven't seen under the hood of a blazer/jimmy from a 95 and up then its not as easy as it sounds. The Spark Plugs are EXTREMELY HARD to get at and pretty much impossible but i'd rather try to accomplish this myself rather than let a mechanic do it. SO does anyone have any experience doing this, (WITH THESE EXACT VEHICLES) and can shed some light on this for me?How do I change a 1996 GMC Jimmy Spark Plugs?When i changed the plugs on my 95,i had to raise the vehicle to get the wheel off the ground,and behind the wheels there is a rubber flap to lift up and reach into the engine bay to get to the back plugs,i used a couple of extensions to reach it.