JDM is just another term thrown around by uninformed trend followers who don't want to take the time to learn what goes into quality parts.

 

The main reason I like the JDM cat-backs is because almost all of them fit perfect . Not all the USDM cat-backs do.
Just when I start to like a USDM cat-back (there are several nice ones out there), I see a picture of it on an EVO and it doesn't look right (from what I can tell by looking at the pics).

I would be pissed if I was the guy that bought that Buddy Club.