The right side of the photo is the front....it's on a 98 non turbo wagon

That looks like the catalytic converter section

 

similar to this

 

http://www.ebay.co.uk/itm/Subaru-Impreza-GF-Estate-585mm-Long-BM-Catalysts-Catalytic-Converter-Exhaust-/330820795698?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Cars+Year%3A1998|Car+Make%3ASubaru|Model%3AImpreza&hash=item4d0674bd32

^^ What Jay said ^^

Yep thanks Jay!.....it's the 2nd cat, bad enough having 1 but the n/a's have 2 ffs, what's that's all about

It's like having s*x with a condom on and rubber gloves ;)

Lol...that's one of putting it, like I say, wtf are Sub all about with 2 cats!....after the mot in a couple of months, if the wrx doesn't sell, I'll take the exhaust off (full stainless) not for the noise, but means I can hopefully keep the original for mot's.....whether that goes to plans is anyone's guess

It could be a muffler but I'm not sure I have seen other car's with 2 parts on them like that. But don't know enough about them everyone I've paid for to be fitted or had fixed :)

yeh me and Dogma stripped his old classic sport down not so long ago, there were 2 cats on that, pre cat and post cat, had it up the side of the house with the foresters system, gypo's came on the rob and took the exhaust part thinking it was the cats, dopey c**ts