I agree ... importing is easy as long as you do your homework. A broker would be a waste of money, in my opinion. (Hmmm ... maybe I should start a business). I bought a 1999 'Vette in October from an individual in New York. It did involve a trip there inbetween seeing the car for the first time, and then picking it up. If your new car is far from home, this could be an issue.
The GM website for determing if there are any recalls on the car is:
Vintage Vehicle Services Importing Exporting GM Vehicles Canada U.S. Mexico Overseas
I spent $260.50 for this (included the fee for getting an immediate FAX copy of the letter). I would suggest this be one of the first things you do to ensure that nothing is outstanding.
If you intend to drive the vehicle home, as I did, as opposed to having it shipped, you will need a temporary permit either from your province or the state where the vehicle is. In Ontario, they need to see the original US Certificate of Ownership. I opted to buy a temp from the State of NY. With a bit of searching, you can determine what is required. The only glitch I ran into was that I offered proof of insurance in the form of the "pink insurance slip." This wasn't acceptable. They wanted an actual letter from the insurance company. Made no sense, but a phone call later, and they FAXed a letter to DMV in NY and I was good to go.
I had no work or modifications that had to be done to my 1999. The letter from RIV says stuff like attaching a bilingual sticker if the airbags require periodic maintenance (which they don't), kilometer stickers for the speedometer (fortunately a push of a button fixes this). In other words, they generate a letter which is not Corvette specific.
A big caution ... some states, like California, will charge you sales tax and you don't get it back. It's a major cash-grab to help their lousy economy. Unless you want to pay an extra 8% or so to Uncle Sam, make sure the state doesn't levy this one on you. In New York, getting my temporary permit, another Government form attested that the car was leaving their jurisdiction.
It was actually an enjoyable, satisfying exercise .. especially when we were home with a "new" Vette like we'd never seen before in Canada. Good luck.