Chrysler Repair Questions? Ask a Mechanic for Answers ASAP
Is it misfiring? Engine knocking or anything? What's the condition of the body? I can't imagine that the vehicle will be WORTH 6k after putting 6k in it, so maybe sourcing a junkyard motor with low miles?
50k is a lot of miles- I think i would take the chance, if the problem is not something that shuts the engine down or leaves you stuck on the side of the road. Like I said, no sense in putting more money into the car than you could resell the car for. You may even be able to get a better trade-in value at a dealer, they don't do a diagnosis of your car before offering you a value, just visual only.