THE TOY, thats a nice collection of info you have there. How about posting up all those mods and part numbers in this thread, as i dont have the time or memory to sign up on another forum.

The intake spacers are a cheap way to keep the intake plenums cool"er". They are 1/8" thick and go between the plenum and intake runners leading directly down into the head. First remove your air intake. Remove the upper clamps in the back of the engine where the y-pipe meets the plenums. Remove the 6 torx bolts on each plenum from the outside in. Twist the plenums upwards and remove them from the engine bay, this will expose the stock gaskets. I cleaned the stuck on gasket pieces with a scotch brite pad. Some of the small pieces fall into the head at the intake valves. I blew out as much as possible with compressed air and didnt worry about the rest. The gaskets must be pre-formed before installing them on the plenum in order to clear the fuel rails. You can do this visually or you can turn the intake manifold upside down and press the gaskets into shape. I also found that using a small bit of rtv/silicone on the gaskets help keep them together in place with the spacer. Upon reinstallation do everything the same in reverse order. Lay the gaske/spacer assemply over the ports. Place the ends of the plenums in the y-pipe hoses they connect to. Make sure the hose clamps are on first but keep them loose. Torque the plenum bolts from the middle outwards. I used a drop of blue locktite on each bolt as well.