That is the foam topdeck and will give you a very stiff car.
Thats what I'm looking for then. The top deck for foam.
The U3148 stiff topdeck still allows flex for rubber tire racing.
No carpet rubber for me this winter. After running foam for most of the winter, I ran rubber a little toward the end of last year, but found myself missing the foams. So this time I'll do all my rubber tire racing during the summer outside on asphalt.
Thanks guys.