Yang,
Straight install with the only modification being removing the outer lip on the rear backing plates to fit the rotors.
I've got them installed on my 2001 NM35 250T RS 4.
Also, you may need spacers for the front depending on the offset of the wheels. I had +38mm offset Yokohama AVS 18"x8" rims fitted to mine so needed spaces to avoid hitting the caliper. Now I've got 19"x9.5" rims so not needed. I still have the 5mm spacers.
Russel