Side Skirts for the 318is will be the same for any e30. Check r3vlimited.com, they have a lot of how to appearance mods. As for turbo kits, you'd have to piece it together. I know a few place that sell manifolds and stuff, for the most part you're on your own. Oh and there is a company that did make a supercharger kit, but its NLA, Downing Atlanta (DASC). Main mods are COP conversion, an exhaust, and a Lightened flywheel. Metric Mechanic makes a 2.1L stroker engine but its around 8k. You're not going to get crazy power out of this engine without major work or turbo/supercharger, so save it on suspension or tires. The best way to make it quicker is to lighten it. Hope that helps. -Preston