I bought this overtray for my SC10. It goes below the damper stay in the front and clamps between the nerv-bars and chassis. On the rear damper stay it will be fixed by two knurled nuts.
I used the overtray on a wet clay outdoor track. The overtray work very well and kept all the dirt outside. You could also use it in dusty conditions to keep your electronics clean.
A must have if you race under wet conditions.