Sorry to say but if u drove it without oil once it is already shot. Just put a new short block in mine with all the other stuff u need when doing a job like this, clutch, valve adjust, all gaskets, timeing belt, all pullies, over 4k in parts and labor, and that was with price breaks from friends! These guys tried to cover their asses by filling it! Now it is your word against theirs. Never leave a place without checking fluid levels!!!! Super expensive lesson! Sorry dude, that's why most people learn to work on their own stuff! I have been driving for over. 20 years and have never paid anyone to change my oil! My car is lowerd and I get my jack under it. And put jack stands!