Another trick you can do to make things look new- pop the hood, grab a can of WD-40, and literally coat every square inch of space under the hood! It'll make everything look like a detailed engine- the plastic covers will shine, the wire harness look new, etc. Just don't squirt the exhaust directly as it'll stink, but overall it'll resemble the cars on a dealer's lot that have been fully detailed. The 1 drawback to it- drive on a gravel road and the dust adheres to it like a magnet!... Of course that'll be the next guy's problem, right?! lol
Working on old cars teaches us patience... and every curse word imaginable!