You would need a bit of work done on blending it etc but could be made to look fairly similar to the CS one IMHO.
http://cgi.ebay.co.uk/EXTREME-BONNET-VENT-SCOOP-AIR-INTAKE_W0QQitemZ170335968852QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item27a8d09e54&_trksid=p4634.c0.m14.l1262&_trkparms=%7C301%3A0%7C293%3A1%7C294%3A30

If you look at the guys other bits he's got some bits that could be used to give the look of some other bonnets.
The modified metal:
http://cgi.ebay.co.uk/550-STYLE-BONNET-VENT-SCOOP-AIR-INTAKE_W0QQitemZ350205655500QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item5189e239cc&_trksid=p4634.c0.m14.l1262&_trkparms=%7C301%3A0%7C293%3A1%7C294%3A30
The EVO6:
http://cgi.ebay.co.uk/EVO-6-STYLE-BONNET-VENT-SCOOP-AIR-INTAKE_W0QQitemZ170335968865QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item27a8d09e61&_trksid=p4634.c0.m14.l1262&_trkparms=%7C301%3A0%7C293%3A1%7C294%3A30
Use your imagination, I know its not the exact same as having the real thing but it might be an option for those that cant afford to pay a few hundred for the genuine article in these recessionary times.