If you know your way around a 350Z, in an 8 hour day you could replace the clutch, fit pads and rotors all round and carry out a P3.
So with an outlay of £80.00 you would save circa £500.00 in labour charges based on £60.00 per hour + vat.
The rent a ramp garages should also have jacking beams and transmission jacks to boot.