The Innocentis used the 1/4-elliptic Sprite floorpan, but modified to used semi-elliptic rear springs, and rear tube shocks. The front suspension is all Spridget. The rear axle is Spridget. The rear wheel wells were apparently modified by some guy named Luigi at the Innocenti factory with a 5 pound sledge hammer for clearance for the different convertible top frame. When I got my Innocenti, I thought some previous owner had bashed in the wheel wells, but since then, I've seen others that were done the same way.