[Mr.Nickey Nova]

I always believed that with the F41 you got the 13/16's front bar, rear bar setup and 5 leafs with the springs. F40 was standard with 4 leafs with a 11/16's front bar,this is the original setup on my 70 L34 Nova. The 4 leaf type springs are the same springs that were used on the 69 & 70 Z/28 Camaros. My 72 Nova SS has the F41 setup with 13/16's front bar and rear bar with 5 leafs for the springs.