As above.

Blitz nur spec s back box for sale to fit newage imprezas. Came off my 2004 widetrack sti. The "s" model fits stock centre section as it reduced to 2.5 inch. £175. See my ebay listing if your interested.

https://www.ebay.co.uk/itm/Blitz-nur-spec-s-newage-impreza-backbox/184239437659?hash=item2ae586b75b:g:gL0AAOSwqDheiKF C

Also prodrive sports cat and decat link pipe off same car. £150. Again see listing if interested and for details.

https://www.ebay.co.uk/itm/Prodrive-sports-cat-and-decat-pipe-for-newage-impreza-wrx-sti/184239449497?pageci=9e63b6e9-4009-4739-a241-d8ef1784240b

Thanks