Update: He essentially has to be all in with IB Motors, as the engine is now pulled out. He's been quoted roughly a total time of 30ish hours for the engine pull and install, along with fixing the piston ring for cylinder 6 (the one misfiring).
The mechanic said the other cylinders look fine, but he recommends he might as well have the other 5 piston rings replaced, which will result in the additional $4k to have them completed.
So essentially his two options are:
Fix 1 piston ring under cylinder 6 = $11K
Replace all 6 = $14K
He's gone ahead and ordered a Model 3 Tesla which will be ready for January, his plans are to trade this Audi + Cash for the Model 3.
Once again he's asked my advice on which of the two options to go with, I recommended to fix the one that is broken, and walk away from the vehicle.
Good luck to the person who purchases this thing off auction
