If it's for the Disco, bear in mind that the old one might be a one-piece, in which case you wil need to saw through the pipe after the middle box, to get it off.
Once all the old stuff is off, put the new middle box on first, then jack up the chassis to give working room before fitting the back box.
Cheers and good luck
all straight forward really did mine last Saturday without any probs ... well the anglegrinder did the hard bit for me. check the screws they give you with the exhaust are long enough ;-) mine needed longer ones which I had around.
didnt need any paste of kind ... althought there is a copper gasket at the manifold if yer doing it from front to back
thats should be it really :-D have fun
PS: the ramps came in very handy which I got from mondo ;-) they have been put to good use not just for the landy
Just changed mine on 300 for a Defender non cat one, plus blanked of the egr, new filter, & now off to
cornwall to a rally with caravan to see how she goes!