New - to me - GT

I think I'm going to purchase a 2000 t0 2003 GT convert. Can you all steer me to any good places to look, advise what I should be looking to pay, and any other tips about these cars?

I've had a few Mustangs in my past, but nothing since an '87 GT.
 
umm the autotrader for your area? or a used car dealer?

as far as payment, its about the mileage and condition of the car. look at the kelly blue book website and play with the numbers a bit.