Is that running the DSG Sambo? We bought the new Jetta TDI with the DSG last year. I was considering getting the FSI turbo version which has the same engine as your GTI. In the end I figures something super economical would be the go since if I wanted to go fast I could jump in the Cobra.
I reckon I could build a good GT40 for $75K or a Daytona Replica. But for my money I'd be building an Ultima GTR. The very comprehensive kit is about $16,000 UK pounds so about $38,000 Aussie. Add another $5K to get it delivered down under and you've got a few bucks left over for an engine and trans, paint and interior.
Check out their web page:
Ultima
Cheers