$850 S4 Revival
This is my 87' FC that I bought in 2022 from under a tree for $850. It was not good (as seen in the second-to-last pic). It had no compression, and looked (and still does really) rough. I tore the engine down but it was not rebuildable unfortunately, and so the car sat in my yard until 2024 when I found a S4 13B on facebook marketplace for a fair price.
At least it seemed fair up until I put it in the car and started it only to find out the rear rotor coolant seal was blown... typical, but at that point I was in deep enough that I decided I was willing to learn to rebuild the engine. Long story short and lots of watching Youtube it is now street ported, has a new exhaust, brakes, suspension, working AC (!), and it runs great! Everything works. I'm going to keep it 4-lug and NA and just enjoy it, because man it's a blast. I even happened to find a non-turbo LSD which I installed. This is my first RX7 and I am super impressed with it, it just drives so well that I am basically dailying it despite the gas mileage. I'd like to improve the paint/body, but I also like the well used look and so I'm not that motivated to spend the money right now.
Along the way I also designed a few random 3D printable bits that are all free to download, you can find them here: https://makerworld.com/en/@mdonald623/upload