Need help with S1 856 Toyota GT86 Circuit tune, No assists

Just made a Toyota GT86 for racing, Bodykit and all the parts I need. I just need help with the tune, this is S1 856 and RWD so does anyone have tips for tuning this very car for Circuit racing?

Why are you limiting yourself to 856? That’s only halfway up the Pi scale for S class.
Also swap to AWD will be faster on all circuits but Goliath.