SL 500 Tuning

So, I have now a little money (about 10,000 EUR) on the side and want to make motor-like something with my R230 – SL 500. It is still an old 500er with 306 HP. The vehicle is in the original condition – only the exhaust system is by Carlsson. Same screws is not possible, since I could not even change the right, front blinker bulb. Give me a few of your ideas or make a few concrete proposals! Or maybe it is better to invest the money in other things (holiday, clock,…) Schoenenen Tag, Gertschi