I'm selling my week old exhaust and high flow cat due to it being incompatible with my head (same reason I had to get rid of my TVR). The parts have done around 200 miles so basically new (distance travelled is from Fensport to my house and then back again to get the stock parts put back).
First reasonable offer secures.
I'm based in Essex but might be prepared to deliver/meet someone half way depending on distance.