Hi Sospan,
It's very difficult to judge how much difference the SSL set--up makes, but my very first practice run at the first Barbon hillclimb meeting after installation was 3 seconds faster than my best competition time there the previous year. The car feels much more planted, progressive and predictable to me, and thus much more confidence-inspiring. SWMBO had her first competitive season last year, and by the end of the season she was only 2 seconds slower than me at Aintree (aaaargh! - doesn't augur well for my coming season....). She's clearly naturally pretty quick, but I do believe the car is also much easier to drive quickly with the SSL set-up.
Whether that translates into any real value for just road use, I'm not sure, but certainly our car is much more user-friendly with the SSL front set-up. If you are ever in our neck of the woods, you are welcome to try our car, and form your own opinion.
Hope this helps,
Dave
