I have searched this topic endlessly, read a million posts, but can't seem to find what I'm looking for (just type in 5/16 plenum spacer and K & N drop in, and you'll see what I mean). The question is, has anyone who's DRAG RACED their rev-up stock, then put in a K& N drop in, and 5/16 spcer ONLY, seen a real improvement in their ET/MPH? I know what the dyno numbers say, but I want real track performance input. Thanks in advance, and hope not to get flamed too much, lol.

 

If you are driving a rev-up, go for the MREV lower plenum and spacer.