We have to assume that the payment is not a consideration,..and you're asking more from a "will I regret it later" type of question as a result of you selling the Fox.
Which brings me around to you must be getting a decent amount for your current car if you are considering using the proceeds as a down payment towards the new car.
Things:
Nik is right,..this would be the albatross year to buy one in front of a completely new model release.
RangerJoe also has a point. Novelty wears off real quick after the third 600.00 payment w/ 57 more to come after that.
Just let me go ahead and stick this spoon in your eye now,...That's how you'll feel when you tell your ins company to bind the new car and they return w/ a quote.
Your Fox will never feel like a new car, The new car does not feel like a Fox ( If that is something you like about yours).
At one time there were a Bagillion fox bodies running around,...and owning one made a "so what" statement at the car shows cruise-ins. Now they are pretty rare, especially for a nice one like yours. It's the S197's that have become the commodity now,....don't forget the new bowtie and high water pants.....it's a wardrobe prequisite for S197 owners.