Got a 2871R on mine and its awesome :twisted:
As for fitting - the only thing you should need to worry about is grinding a little off the transfer box case so the 3" inlet will fit - remember to grind a little extra so you can get a hose & jubilee clip on
Other than that, cant recall anything else. It fits the standard manifold and standard elbow (if you're running either of those) - oh and be careful with the lambda sensor thats at the top of the downpipe - nissan charge £108+vat for a new one (plenty of 2nd hand ones about tho').
One tip i can give you is to change the oil feed pipe for a braided one. This is a must. We didn't do this on mine or my mate's Pulsar's and we've both had the oil feed pipe crack/snap...and its amazing how much oil you can lose out of there in such a small space of time! :doh: Could've been terminal for both of us! (but thankfully wasn't!)
If you need a head to manifold gasket use an S14/S15 3 layer metal one from Apex Performance, matches the head and std manifold perfectly - and its re-usable
Other than that, good luck with it!
Cheers,
donpulsar