NM 25 mm rear sway bar and links. I have the CravenSpeed short shifter - get the bushing as the stocker will break. I stayed on 17s for a lot of reasons and have NM Rse05s. Power flex engine bushing. My JCW has the Dinan Elite...anything that gets you up over 250 hp is fun. Get off run flats, add chassis stiffeners like the big pair and a front x brace.

I have a modified 2005 S2000 I used to track - in the middle of a refresh with new HKS, SoS supercharger. I like a sporty riding car but the S is a bit choppier than Mini. I lowered mine using NM springs on sport shocks and ride is very good with Sway bar. Will be going to Koni Yellows at some point. Don’t straight pipe - drone gets rough. LSD is in my future, should have come with one.

coming from RWD, spend some time at Autocross changing driving style. At least I had to. Enjoy fun car.

 

The Mario Plaza Tune and Wavetrac are great choices...Whatever downpipe you get send it to Swain and get it ceramic coated (White Lightning White Lightning Exhaust Coatings – Swain Tech Coatings | Industrial Coatings | High Performance Racing Coatings ) to control heat. I would add an NM Exhaust...larger diameter and lighter than stock. If you get an OBDII Reader ( ) also Google Play a Free Torque App ( https://play.google.com/store/apps/details?id=org.prowl.torquefree&hl=en_US&gl=US ). As for an Intercooler I think FORGE is the best IMO. PRACTICE>>>PRACTICE>>>PRACTICE
Now if you want a Functioning Hood Scoop the Eventuri Carbon Setup ( Eventuri All Carbon Intake - MINI Cooper S & JCW / F54 / F56 / F57 – UroTuning ) is great but not cheap...I love mine