Wouldn't you like to have a trunk full of intakes like this? You would if you wanted to run roughshod past the factory 6,250-rpm rev limiter all the way up to 7,750 rpm. Keep in mind that these aren't out-of-the-box intakes, however. Each intake has received Stage II port work in at least the lower intake (the boxes can't really be ported) and has had the throttle body-openings expanded to 90 mm if necessary. Such port work will set you back $425-$475 (the additional cost is for cutting and welding intakes such as the Trick Flow R). It's also worth noting all the upper-only, box-style intakes were run on the same lower-a Trick Flow R lower, which sells for $250 before porting.