Hi Spudd,
I cut and past the text below from a post I did in February 2012, hope it helps....
This question was asked recently and has been partly answered here I.e a bit of fiddle to get at, with the of potential problem of siezed bolts at the manifold end.
I did mine in the summer and snapped a stud, but was lucky enough to be able to remove the stud.
Get the car as high off the ground as you can, and remove the passenger side front wheel. The manifold bolts will be right in front of you. You will be able to undo two of them easily from here. Next get under the car and take off the short propshaft, which will allow you to get a long extension bar and universal joint socket thing onto the bolt at the rear. Also having the propshaft out the way makes removing the old and feeding the new pipe in much easier.
Mark the propshaft so it goes back on exactly the same. I got this advice on this forum and apologise for repeating it again.
Good luck.
Alan