You're way to logical :D It looks cooler than the orange one (maybe it's black?--I've been working a lot on my GMJeep item of late and my memory is a little 'fuzzy' about the F*rd), so it's got to be faster.
I have a blue one (bought from Navistar) but haven't put it on yet.
There's always a catch, isn't there. {regarding the first question}
Looks like a great site. I'm looking for an answer to a catalytic converter question on my '99 (early) crew, 4x4, auto, PSD. I just went to get it inspected/emissioned and they won't pass it without a catalytic converter...