Good mod choice.
I installed an intake spacer a couple of months ago now, similar to the PHP Spacer. Mine was designed and produced by Roy, a member on the Mach 1 Registry site. This one is made of a phenolic material for better heat resistance, and it's actually slightly taller. The PHP spacer is 3/8" tall with gasket, while Roy's spacer is actually 1/2" tall with the rubber gasket in place. Can be found here:
http://www.mach1registry.org/forums/...ad.php?t=61184
I definitely liked this mod, although installing it was a pain. The entire upper intake was raised 1/2" so it took some struggling to get the EGR bolted back on. But it raised up the shaker even more, which looks even cooler now... I couldn't really tell the difference in power either, but it's supposed to be good for about 4RWHP and like 10RWTQ or so. Let us know if you notice a difference at the track.
