I know a few are not fans of putting a car's model number on a rego... although I figure it's not a bad idea considering you have to have the rego there anyway.
Found this one on ebay... only comes in standard size as it's a custom mix plate (ie letters-numbers-letters) and vicroads don't do these in slimline.
http://cgi.ebay.com.au/ws/eBayISAPI....m=250670438885
I've seen BM135I on a site for $3k a while ago... does anyone really pay these prices??