In the photo for a 6 bolt, listed as cat delete, you could see the hole for the sensor in the downpipe. In the end i just chickened out in case there were any problems. This was even after David explained to me the benefits of the 6 bolt version. I've always had a problem with the compatibility on ebay, i never trust it. The parts have now arrived and are stored in my garage until I get around to fitting them.
They are slightly incorrect, the fron't mounted K series have a pre-cat in the downpipe, the rear engined MGF/TF don't except for the LE500.