please help if you can

Hello people, i have a 1.8 mk1gti golf with the original cast manifold and down pipes which go strraight from 2 into one. there is no spring clamp or anything like that, the down pipe is one two into one piece and slides into the front section of the exhaust system. Now i want to put a stainless four branch on but the only one i can find is from unit 3 tuning on the internet.
Having sent a query via email to unit 3 it would appear that their version of a four branch has a flange at the exhaust end.
They say that this is original system to fit my car but i know it is not. Can anyone tell me where i can buy this piece to bolt onto the flange to enable me to couple it up ro my exhaust.

alright mate, i found these is any help. The prices are a rough guide so dont quote me on them:- £12.91 new - Demon-Tweeks.co.uk, £2.83 new - RockAuto.com, £19.98 new - JBS Auto Designs. I recon demon-tweeks will be your best bet. hope that helps mate