OK, here is the easy way to do this:

1- Remove engine cover
2- Remove back left throttle cable/ground strap small bracket bolt
3- Remove front two throttle cable bracket bolts
4- Remove electrical connector left of rear throttle cable main bracket
5- Remove vacuum hose from left side of vacuum solenoid (don't know what that unit does but it is right below the main throttle cable bracket)
6- Slip vacuum solenoid off of bracket by pushing it towards the driver's side
7- Remove two bolts holding the main throttle cable braket (note: these bolts also hold a second bracket the holds the vacuum solenoid)
8- Remove the three rear plenum tie down bolts. The left one you can see from the left side, the right one is right below the throttle cables about an inch from the right edge of the plenum, and the center one is under the main throttle cable bracket. DO NOT REINSTALL THE CENTER BOLT WHEN REVERSING THE PROCESS. Without the center tie down bolt you MAY be able to skip steps 3-8. I didn't check so this is still unknown.
9- Unclamp the black rubber intake hose from the throttlebody and push it under the throttle body
10- Remove the hose from the the PCV valve at the top right of the front valve cover
11- Remove nuts and bolts holding the front of plenum (2 nuts, 2 long bolts, 3 short bolts)
12- Lift plenum off studs
13- Place a rag over the intake manifold so you don't drop anything into your engine
14- Tilt the plenum up on the passenger side about 45 degrees and brace up with a 6-8" long piece of wood or equivalent
15- Change rear plugs

This will take you 45 minutes max once you have studied the procedure and your engine bay..maybe an hour the first time due to the nasty center tie down bolt. I think I could do this in 30 minutes now that I have done it once.