Not to flame you but if you can afford to spend thousands of dollars on a new car, you can spend 15-35bucks like the rest of us for carfax.
Think of it this way, if you spend the money and don't by the car--it's a good lesson in not owning a lemon. I find it difficult to believe you are really commited on buying a car if the few bucks for car fax isn't in the cards.
I've had 2 or 3 car fax accounts while shopping cars for months sometimes I don't buy anything. But it's well worth money to not make payments on a lemon or northern car that is a southern transplant pretending to be a southern car.