I had ALL of that done this year on my 15 JKU Sahara with 52k.Just one cylinder head replacement is a cost of about $3,400. Then about $800 for the oil filter housing, and lets not forget Radiator, thermostat housing and water pump, probably another $1,200. $3,000, just doesn't make any sense. Op's..almost forgot camshafts and cam rollers, OUCH.........
Luckily I have the 7/80K MOPAR warranty. Paid for itself this year again.
Last year almost the same in repairs.