Melted piston rings?

Took the car to a Ford dealer ,and they told me 2 fist size holes on each sides of engine. Well the vortec v3 supercharger created too much boost I guess even just10psi. But still, got it from a used car dealer, within one month this happened, they simply don't know anything about their cars listed for sale, all they did is clean the car, they don't have a service shop I believe. And it marked sold AS IS, this mean it's better off or same as buying private owner. I will never buy a car from a dealer doesn't have a service shop , that's why it didnt have 90 days warranty. Do you think the dealer will do anything to fix it, chip in money to fix it. A used 05 Mustang v8 cost 1400 with 56k miles, and labor cost below 1500, or 1000 for engine swap. Can i sue them. Or my life is ruined, I'm broke already. Also any car sold has implied warranties, which mean things you sell won't have major problems like a blown engine within 1 month, or wheels came off while driving, or door fell off, anything unexpected that caused big problem. It's a common sense warranty, it's not like battery just died, it's easy fix, or head light broke. Do I still have any luck? Maybe ensurence helps me?