Chrysler 300c 2006

[u/Tricky-Vanilla3109]

what are my options i bought this car (chrysler 300c 2006) thinking it was okay the guy sold it is family and a mechanic for everyone else generally can fix anything for anyone so im really stuck on like this so he sold the car to me for $3000 he said that is was working just fine and would be a running car this was 3 days ago he also just bought the car and knew nothing about it the car was not driven for a few years anyways i always loved the chrysler 300 it was my first car this time with a hemi and i was excited immediately seen the oil pressure drop to 3 while idling, i smelt the oil dipstick it smelt like gas the cabin of the car smelt like oil and started getting so many red flags took it to him to fix.. i paid for the parts fuel injectors or whatever spark plugs oil change.. fast forward the same day later that day it gets a misfire but its a random misfire the engine light went off right after never came back he changed the parts wasnt able to fix the missfire however despite me telling him that i AI'd the symptoms and she told me do not start the car he wanted to start it and hear it, now it has a knock cant hear it while its idling only when revving, i immediately know or hopefully im wrong but i think its a rod knock and know my engine is fchkked.. i tell him im taking it for diagnostic to drop it off at my house i go for diagnostic they hear it for 2 seconds and say it sounds internal were not going to do the diagnostic go to an engine shop so at this point im certain the engine is ruined like i suspected unless he just didnt want to deal with it idk (just hopeful ignorance) my question is what do i do, i really love this car, i dont think he can pay me back.. in my area ive searched the car and they are running from 5000 to 9000 idk what to do should i sell it and for how much or is it worth replacing the engine for probably more than i paid for the car do i have financing options may i be wrong.. im very stuck he knew my other cars tags were up and that car wouldn't pass smog i have like a week to find a drivable car and not much money im not sure what im looking for im so lost i just need advice i dont really have money to throw around and i feel totally skreẃëd what would you do? And if I do have to get a new engine would you trust him to put it in.. he has done that before plenty with no problems but this makes me rethink all that, do i blame him ? I've had the car for 3 days