Ok. Not to be a prick, but you really should have used that handy-dandy "search" button on the top of the page, since you know that this question has been asked a thousand times.
Second, it was asked 2 days ago, I replied, and told the person to feel free to email me, to save board space, and he did. You should check the tech section for technical help.
All that aside...
When you get the calipers, they will probably be unloaded. So you will need to go to the Nissan dealership and buy a "brake hardware kit." This has the shims and crap you'll need. Then you will need 4 retaining pins, to hold the pads in place. Nissan has those for like $1.50/ea.
Then you'll need the PDM conversion lines. The reason is because the fitting on a 240sx caliper is a male/female flare, and the 300zx is a banjo fitting, or something like that. Anyway, they are very different. So you need those.
As for the rear swap, not too many people have swapped that, cuz its a pain in the ass. And I have no clue on that.
But if you need more help on the swap, email me, at
[email protected]
-Jeff