low is right it does get very thin there. I have an intake that I cut the top off and welded on a bigger plume. It takes any 5.0l throttle body. Never had it on a running motor so I can't say if it works or not. Could turn out to be a big waste of time. The linkage turned out to be a big headache. I took a bunch parts to make the 5.0l throttle body work.