Of course, it's worth 9/5ths of opps all to anyone.
...except you. (For some daft reason

)
This is the process I use. But BEFORE I buy the car. Not after. That being, search out a car that's suitable. Then, and this is the bit we're doing too late, see if there's anything out there that's better than the car you chose. THEN buy the car.
The problem then is, obviously, come replacememt your buggered unless something better comes up. Which as we all know, it hasn't in your/out ownership.
....anyway, your is a non answer. You know what to do. Might involve paying someone to do the work but imagine the result. Body stripped and repainted. Ls V8/or a straight 6 or whatever, even a big Diseasel. 360mm discs with 6pot brembo calipers. Full ohlins suspension. Completely refurb the interior and seats. New screen. Blah blah. Jobs a goodun.
You have your perfect car of your choice. Then if you do replace it, the bits are worth something.