Hello I hope i havent made a mistake buying 2014 ED.

[Knock on wood]

The truck has not had any recalls fixed, and it has 150k. I took it in because the intake seems to be leaking, so we are waiting for parts at the dealer. High-pressure pump, intake, and EGR cooler. I had planned on an EGR delete and a tune after the recall was done with a clean intake. This is my first Ram, and I like it, but all these engine issues worry me. All I seem to hear is engine failure with this model, and I wonder if I should even spend any more money on a delete/tune and just try to sell it. I might already have one with the highest mileage expected out of one. What is high mileage for this engine before failure? I have several GM gas trucks with over 300K, so I do take care of my vehicles. Any advice, or can someone say I have one with 300k and no problems?