whats the big problem...... import the vehicle as "race only" and list the import time as less than 90 days and you absolutely wont have a problem!!!! you can do the paperwork yourself but the best thing to do is use a bonded broker for the import and you wont have a problem
use the EPA form3520-1 (rev 1-06) and put a check in the box "code L" this will allow you to import as a "race Vehicle".
also put a check in the box "code I" which will allow you to temporarily import for testing purposes.
Attach a declaration stating the vehicle will be imported on XXXX date, then transported in an enclosed trailer to the race course for testing and then transported back for export on XXXX date. also add that the vehicle will never and can't be operated on public highway.
Dude you should not have a problem.... if you do, i can give you a contact of a broker I use....
Just relax and get er done....
kent