Yeah I was surprised as well, I orginally took it into discount tyres in Phillip for a rego check. I argued that the GTV came out with a twin cam with everything else stock but they then changed there tack, carby to efi, it's modified. Dispite my efforts to point out that the twin side-drafts pump out more power than the efi they sent me to Dickson. The even crapper bit was the guy who did my second check at dickson after I got my engineeering papers looked at it and stated "2TG, those came out standard in a GT, why did you need to get it engineered?" where was he when I first got it looked at Oh well at least got the 16" wheels engineered at the same time.
ps. will do a grand unveiling of the mighty Az at the bowling on Sunday - although I really need to polish up my bad spray painting
::edit::
As it had no rego I couldn't just get the block details changed over, had to get a full roadworthy inspection done.