Hi,
From last years snowbirds we ran a bit softer oil. 30W instead of 40W last year. We ran same springs. It seemed that the new car had more reaction in the chicane. What I also noticed was, when the traction came up the car didn't flip at all. Last year we had many problems when entering the corner that the inside wheels were lifting. We ran a bit wider topdeck then the kit will have. We did that because the traction was super high. On normal tracks foam or rubber tyres the kit topdeck will be also really good.
And the wider topdeck will be a option part.
Jilles