Re: Texas car?
ZXTOY makes a good point. Just because a car is a southern car doesn't mean that it wasn't at some point a flood casualty.
Here in the northeast, many people are taken in by the "southern car, never seen snow" line, when it is later found that the car was stuck in a river flood, bought by a dealer, detailed, and shipped up north.
With a car in such condition as you describe, you ought to take a look on ebay motors and other car sale sites and see what a similar car is going for in your area. owners tend to attach a sentimental value to these cars, and looking at others will help to keep you objective. Take plenty of pics. Overall exterior, each individual panel, engine bay, interior dash and guages, seats, door panels, headliner, get it up on a lift & get pics of the undercarriage, frame rails & floor boards. Make sure to get pics of any issues like the dent and headliner you described.
1986 N/A Z31 GLL, black 300k + mi
2006 Honda civic Si, grey
1994 Chevy K1500 Blazer, black