I found this 90 GT for sale in my town, only thing that has me worried is that it has 190k miles on it. The guy who owns it is an older gentleman who bought it new in 89. He said oil has been changed ever 3k, garage kept, never seen rain or snow, you can tell by the paint job, its all original and looks mint! Only mod is flowmasters with o/r h pipe. He wants 2500 for it. Is it worth it? What problems should I look for before purchasing?