2003 wrx. Looking to fit a decat centre pipe and a milltek cat back system.
could somone please point me at the correct gaskets.
I'm miles away from a specialist so having to resort to the local tyre guys.
thanks in advance people
dave

 

The Miltek cat back includes a centre pipe, be it resonated or not. Your OEM system is a 2.5 internal bore and the Miltek is a 2.75 so you will need to get a exhaust reducer. Can be had on eBay or through Miltek I believe.