howdy ... ive been here for a while with a 98 Subaru Liberty Rx2.5 Wagon

i also have a 93 Honda Civic Gli Sedan and a 04 Toyota Corrolla Hatch (facelift)

i also used to own a Honda Integra Type-R

we are looking to trade out the civic for a WRX and give the liberty to my mum

im looking at the 2003-2005 WRX's - i have some questions for the gurus!
what i want to know is:

- what are the main differences between the year models?
- is there a performance difference between a sedan and a wagon? (i want a sedan with a STI wing and my missus wants a wagon)
- is the weight difference and addition of a sunroof of the club-specs an issue?
- why is there different numbered clubspecs that look the same in this year range?

i have done some research but if anyone could give me some straight out answers to my questions i would be eternally grateful =)

Cheers
S41NT