Changing Spark Plugs on a 1985 Pontiac Firebird Trans AM?

I have a 305 in my Trans Am. I can reach the front two sparks with a little diffaculity, but figured out how. I am having problems reaching the back two. And hints on reaching these plugs? This is on both sides of the engine. On the drivers side, I have all the brake lines, and the master cylinder in the way, and vacume lines on the passenger side.|||take the wheels off and go through the wheel wells on it ,this should let you get to them,i had a 91 that i had to do this way,very tight to work on those,good luck.