HDi "Race Tube" - Worthwhile?

[C.A.R.]

If I ask my mate to fit the decat pipe in the morning is there anything else I'm likely to need? When I fitted a decat to my 1.8 I made the wise move of buying a new cat fitting kit (gasket and bolts) so that we could just cut the old and rusty bolts off!

Is it a similar story with the HDi? And I wonder if the local parts place has the correct kit in stock....

Finally, how easy is it to add the mid pipe afterwards? Is it something I can do myself on axle stands?

Tomorrow I'll be paying £20-30 because I'll need my mate to use the ramp to get the decat on. After that then all I'll have is axle stands...