Might be worth talking to this guy
http://cgi.ebay.co.uk/2009-Nissan-350Z-Parts_W0QQitemZ280339444145QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item280339444145&_trksid=p3286.c0.m14&_trkparms=72%3A1683%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318%7C301%3A1%7C293%3A1%7C294%3A50
From the pics i cant tell if there is any damage to the bonnet......If there is i dont see why not you couldn't bend it back into shape