Thanks to Jimmy and George fraser.
Jimmy I got the CAT today thanks.
Jimmy saved me £220 on an aftermarket CAT compared to a OEM MB one.
George Fraser charged me £25 to fit it!!!
The cat arrived well packaged. compared to the MB one the actual CAT BOX was alot smaller and the whole thing weighed less.
The original one had a higher build quality because the pipework was much thicker therefore reducing engine noise, it also had heatshielding which the aftermarket one did not. The actual pipework 'bends' on the aftermarket one had kinks on the bends, which is a cheap way to make a bend, the MB one did not have any bends.
I just hope the aftermarket one lasts longer than the OEM one did!!!
When I have my turbo fitted I will put heat shield around the pipework.
also the aftermarket one had to be bent a little bit to fit properly, apart from that it was quite easy.
George fraser also had a 1 year newer C class (C180), it had 1 pipe to the manifold and the couplings were much lower down!!
I could have changed the CAT myself if I had the 1 pipe version CAT.
My engine now sounds back to normal nice and sweet! I am also £220 more richer!!!
Thanks for everyones time!
oh and I knew the ski hole would come in handy <img src="http://www.mbclub.co.uk/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt='
'> I rename it the 'CAT FLAP' - oh how very un-original....
edit I am more than £220 richer as the stealers would have charged £100-150 for fitting!!!!