Being that I've been into JDM cars for a while now, I do admit I've tossed the idea of an S15 back and forth, but for the money spent, as @
industrial said, there's far better options. Only a true enthusiast could appreciate a car like the S15, unless of course you're going all out on the build, but for me, I prefer the OEM+ look. No one would give a shit about an S15 with a drop, wheels and mild engine work. Everyone who has seen any FAst and Furious movie would go buck wild over a Skyline, and the resale on unmolested ones in good shape is astronomical.