I`m building a 2.1 zvh powered s2 and hoping for 270-280 bhp
At the moment the car have a standard s2 arb with poly bushes.
Is there anything more I can do to improve the front suspension?

I have been thinking of fitting adjustable tca.
And is the s1 arb any better then the s2? Any point of change to s1 arb?
The car is lowered 35mm and on sachs shocks. Maybe change to adjustable konis or even coilover. What do you think??