http://cgi.ebay.co.uk/90-degree-Stai...item33663197d5
http://cgi.ebay.co.uk/45-degree-Exha...item3366251abc
http://cgi.ebay.co.uk/90-degree-Stai...item4aa3fa6683
There are a few things that you will/may need although they are in stainless, stainless is nice! but rather expensive and im guessing if you dont want to fabricate you certainly dont want to be welding £50 worth of a bend!
if you slap in on google exhaust components a few companies will pop up that will give you a rough guide . and even linco stock parts which i found out :P.
i will find you the company i use there on my emails somewhere ;-) got to trail through 100 or so emails haha !
they will usually do a good deal on a bulk buy kind of thing
and certainly much cheaper than other places
Michael