We (Craig and I) went after that record (12.15) in my ute with the same mods and couldn't even beat his full weight time (12.4). That was one tuff freak of a ute.
Here's a pic of Craig steering my ute at the Ford nats at heathcote earlier this year (12/09/2008), best we could put down was a 12.6!!
Cheers
Glenn