My son was given this car by a family who didn't want or need it. So far we've replaced the combination meter and are working on doing a tune-up including spark plugs, coils, oil, oil filter, serpentine belt and idler, a really bad cabin air filter, and the rear tail lights. There's at least one LED out of each of the assemblies and neither operate at full strength. What else should we be looking at changing right away? This is just going to be an around town car, not a distance driver. Those plugs may be original, all suspension is original but may not replace it since it's just not worth it... or is it?