I've just taken off an 80mm Round Twin Jatex System stainless steal exhaust from my 96 Mk111 8v Gti. The fitting will go straight on and is from the CAT back.
The system cost ?309 and is still in great nick, roughly 18mths old, still got the original receipt from Venom Motorsport.
If your interested drop me an email to crawford@killpacket.wanadoo.co.uk