I've driven the Perrin in a WRX and it wasn't very good. The throws were a little shorter, but it was notchy (in a bad way), and somehow made shifting a little inprecise. Like I said, this was in a WRX, I have no idea about a Protege.
The Subaru WRX Short shifter is different It is a shifter adaptor. The reason that the shifter felt imprecise when compared to the Mazdaspeed, or any other car for that matter, is in the stock WRX shifter design. The shifter itself is actually made of 2 pieces isolated by rubber. The shifter actually has a bit of give or squish every time you put it into gear. Makes it feel kind of funny.
The short shifter is available now and will be prominently displayed on our all-new web site in the weeks ahead.
This was also posted in thread:
http://www.msprotege.com/forum/showthread.php?p=1351314#post1351314