140K on engine, maintained pretty good, mostly highway miles
lifter just started making noise, put Seafoam in in to quiet lifter, and plan to get an oil pressure test next week. Most major items have been previously replaced except below. Both factory TSB and intake manifold leak and recall valve cover gasket leak were fixed recently.
Transmission appears strong
Below items have not been replaced yet:
Serp belt tensioner
I am wondering if I should rebuild the engine if the lifters are bad or get rid of the car since it has high mileage and more will potentially go wrong. I love this car.