I crashed a friends subaru and his parents are hunting me for money. How much am should I be expected to pay?

Turning a corner I overturned and have dented the front fender in front of the left wheel. Knocked the front left wheel out of alignment, all but removed the penger mirror and scratched the left side of the car, only paint deep to my recollection. Also the left front indicator cover has been smashed, bulbs unharmed though. The car is a subaru legacy 1985 station wagon 4wd. They either want $700 for the cost of the car itself or repair money. Please help soon, friends parents are hunting me down.