After checking out prices for new jeeps, I’ve decided to keep my TJ with 90k miles on it for another 10 or so more years. I spend a lot of time in the back country of Utah, so long-term reliability is critical. For my 90k service, I am not only changing the coolant but also the water pump, thermostat, hoses, etc. Normally I would change out plugs, spark-plug wires, distributor, pcv etc as well, but I have the ignition coil rail. I’m changing the plugs and wonder whether I should change the coil too. How prone to degradation and failure is the coil and is it likely to fail by 120k total miles? Opinions on whether I should replace it as part of a major overall renovation or let it go if and until it fails? Also, I am planning to use OEM MOPAR parts rather than other manufacturers. I know MOPAR costs a lot more, but I am betting that they are more reliable. Again, what advice do you have? Thanks in advance!