Wrx/Sti tbe/dp/cat back fitment question

[StiGuy]

Hey guys just to make sure...

Tbe, dp, cat back are all the same for the new age Impreza correct? I.e. anything 02+ will fit either the Wrx or the Sti? Looking to buy these items used so I just want to make sure before I buy 'em for my Sti. :)

Thanks!

[JonLGT]

I dont know about the downpipe but i know the STI catback will swap to a WRX.