1996 Nissan Sentra Super Touring (purchased used in 2006). I bought this car specifically as a "toy" or weekend car. When I got it, it already had a SR20DE engine under it's carbon-fiber hood. The suspension was crap, coil-overs at the back, cut springs in front and the radio sounded worst than a jeepney. On top of it all, the engine leaked a bit of oil and I eventually found some gremlins in the car's electricals causing blown fuses and the battery not to charge while driving.
It was a bad car to buy but I overlooked it for the SR20DE already under it's hood. Given I was looking for a weekend toy, a lot can be "forgiven". Eventually the car was sorted out, all the leaks fixed, suspension upgraded with track-rated springs, adjustable shocks and new wheels fitted. The engine was later tuned & dynoed to make a lot more HP. It became a fun weekend toy that goes as fast as it looks. Vmax at 219kph.
Unfortunately, few years later, I had to sell it to make space for a new car I was buying. Up to this day, I miss that car.