Thought I'd put together a few tidbits learned along the way. These deal w/ the new age sedan (GD). People often what differences in suspension are there between the WRX, STi, STI RA (or RA spec C). In 01 it was RA, 02 RA spec C, 03 spec C- all the same.
WRX non-inverted, 22mm piston
STi inverted, 40mm piston
RA inverted, same strut (same part #'s)
WRX 168 front/119 rear (MT)
STi 188 front/173 rear
RA 217 front/ 190 rear
All have the same tops. I found this interesting as many (including myself) thought the STi and RA got firmer tops. The only firmer tops are the Group N- which are aftermarket STi.