Grip Roll on Astro Turf - Anti Roll bar

[mikeyscott]

Took my car out to Titchfield tonight to see how it runs and found it suffering from grip roll. Started to feel better after I change the rear tyres to mini pins - shumacher and fronts are mini spikes at the mo (need wheels for my stagger ribs). It was particularly bad with mini spikes on the rear. ( I will add that the tyres on it now are worn)

Shocks are :
blue spring & 35W on the front
silver spring and 30w on the rear

I have an anti roll bar sat in my box, worth fitting? I got it due to the manual stating that it's a good option part for high grip tracks.

How much would it help to fit it?