I am considering the purchase of a 92 NSX and I have some questions that would be very helpful in my decision to make this purchase. It is a 92 with 35K miles, the price I would be paying is 35.4K. The car has a problem that I would like to know if it would be expensive to fix. The problem is the heater blows but only cold air. Is this the thermostat, or could it be something drastically expensive? The second problem is the car is within snap ring range. Although, the dealer has reduced the price by $2500, so I can purchase a 4 year/50K mile warranty. He will not be selling me the warranty, I will be purchasing it somewhere else. If anyone could answer my heater questions ASAP I plan to purchase this car on MArch 15th. Thank you .