Geoff,
great looking car. It seems you have the same problem that I have. wife has decided she likes the car, the six year old absolutely loves to go for drives in the cobra, especially to school, so now I have a three way battle as to who goes in the cobra and sending the kid to Grandma's for a visit doesn't cut it anymore.
In relation to the VIN number we do a lot of work with a company specialising in Laser cutting and etching. I had them etch my VIN number onto a piece of stainless steel (2mm thick). I then welded it to the left side frame. I didn't have any problems with registration last Wednesday. If you and / or Merv want me to get your VIN numbers etched onto a piece of stainless let me know. Cant remember how much it cost exactly (it wasn't expensive as I recall) but can let you know tomorrow when I get to work.
email is
colinh@qldbreathing.com
regards
Colin