The exect same thing happen to me. I got a new engine but the dealership made me pay $600 for new spark plugs. It took them two months to fix it.

 

made you pay?!? I would of been in contact w/ Chrysler Corporate and told them to shove it...$600 for spark plugs...? Honestly sounds like they might have got you there, I'd find out why they made you pay? If it was under warranty you shouldn't have to pay for anything! Hell I would of said put the engine in, move it to the lot and I'll bring my tools and buy the plugs and install myself for half the cost. lol.