E30 Zone

i currently have a 320i and i wana buy a full exhaust system for it, but i know that i will be doing an engine swap in the future for a 2.5. so could i put an exhaust for a 325 on my 320 so that i dont have to buy another when the 2.5 goes in (hopefully) sometime in the future ?? will it reduce performance for the 320 ? because i stil wana fiddle about with the 320 to improve it. can someone let me know if this is a bad idea or not ?
cheers

yes you can use a 325i exhaust,it actually it perks the 2.0 up a touch!

ok so 325i exhaust it is then. cheers mate