Clyde, I do monitor the Impreza forum - 95% 2.5l stuff.
The OBS I think has different brakes in the rear right? And is the exhaust the same length as the RS or other models?
For $ reasons I'll probably pick up a '98-'01 OBS but they are rare here.
I have learned a lot from reading here, probably need to just dig more.
1 Lucky Texan