The main question is does the car have a sentimental value ? And are the other parts of the car still in working order ? engine, shocks, tires battery, brakes and the electrical ? Because if paint is not just the issue its not going to be economical to repair the car. But then to give you a ball park figure I just had my 1987 L300 versa van repaired total cost P150,000. This included repaint, body repair (yes it was full of holes on the floor and sides), brakes, tires, battery, overhaul engine, and fix the aircon. In my case the amount I spend was way high as compared to the resale value. But comparing to a new van which is now at 733k. 150k doesn't really sound so bad

the price is somewhat more or less what you would spend for your car if all the major parts needs replacement and repair.