Did few track days during summer and now I am need to have rear suspension improved. Suspension does have KW competition 2-adjustable shocks & front is with coil overs (350 lbs springs, road legal tyres Hankook Ventus z212). Camper used -2...-3 deg. and toe out abt. 3..5mm. Also front roll bar was removed. All this has improved car handling or reduced understeer but funny enough lap time did not change much.
Trouble is, I have no clue where to source better anti roll bars (are not allowed to install additional) & stiffer rear torsion bars. Or has anyone did anything else in rear to stiffen it?