Well I took the plunge.
Ordered one using the EBay link above.Turns out the Ebay shop is also Moto Legends (UK distributor for GPR).A tracking number was given and I was expecting to wait 10 days or so. Went to work the following day and even before I tried tracking the parcel it turned up at 9am which was a pleasant surprise. This meant I could tackle the job on Friday evening. Josh came to assist. Took all the exhaust trimmings and foot pegs off before removing the stock exhaust. Removal of the front pipe made this job easier. I unpacked the new GPR, it was well packaged with any delicate part also coming in snazzy fabric drawstring bags. The new exhaust went on bit by bit. Last piece was to reinstall the Lambda sensor. Euston we have a problem !. The threaded boss in the new pipe was much too big. A little head scratching occurred as we thought we had lost an adapter or such like. It turns out I had accidently been sent the Wee system instead if the Glee system. Both systems are identical other than the pipe with the sensor boss. I sent an email to Moto Legends at 6 o'clock Saturday Morning letting them know I would be getting in touch. I had a reply from the M.D of the company by 8am the same morning saying he had worked out what had gone wrong and would I like to ring him. Very nice chap indeed who apologised and was going to send me the part I require by Tuesday. All in all it could have gone better but id still give it a 10/10.
Just waiting for the final part so I can fire her up.