I shouldn't be doing this because then every bugger will be cruising around with one, but what the hey.
I spotted this ebay seller a few days ago :Spoilertek Bodykits
$245 per unit plus FREE S&H
http://cgi.ebay.com.au/XA-XB-XC-GS-Bonnet-skin-mold-on-type-SUIT-FORD-XA-XB_W0QQitemZ190299597862QQcmdZViewItemQQptZAU_Car_Parts_Accessories?hash=item2c4ebd6c26

oh yeah btw, the bonnet's just about done, just needs painting, should be done in no more than 2 weeks.