check ebay ash. look for a seller called "mybodykits". he sells awesome parts that fit well. i bought a bar off him for the 33 and it fit perfect. checp prices too, bout 300 i reckon.
GTR: http://cgi.ebay.com.au/Nissan-GTR-Skyline-...id=p3911.c0.m14
Nismo: http://cgi.ebay.com.au/Brand-new-Nismo-fro...id=p3911.c0.m14