Elise exige s1 exhaust back box

Stainless exhaust back box for elise and exige s1
I think this is a janspeed one and has the oval tip. I have new clamps for it.
One benefit of this exhaust is the tip can be adjusted to extend with the exige rear clam
I am looking for a quieter twin tip exhaust for my car so would consider a swap or trade.
Can post cat cost but collection from St Athan South Wales preffered.