In my experience shopping for a miata, generally there isn't a huge difference in value between all-stock and "OEM+" cars that have minor tasteful mods from reputable companies. Koni and billstein shocks are pretty common and may even help resale a little bit. Repairing worn-out parts with slightly better aftermarket replacements doesn't hurt either. Any car with new bushings (provided they are rubber and not poly) will probably be preferred to one with the original, whether they're OEM or the slightly stiffer IL Motorsports ones that are common. Ditto for things like bump stops, shock mounts, et cetera.
Pros: Koni and Bilstein shocks help resale
Vehicle:
Mazda
