HBF told me that I could go to any car yard to get an evaluation and that would be good enough for them...as long as it was with their header, But I went to Autoworx and got one.
Paul is pretty reasonable, even if you didnt buy your car from him, you might in the future...so I think he would be more than happy to write out a quick evaluation...
BTW I pay $850/year with HBF ( R32 GTR insured for 26K )
29 yo with clean record...