The ARP Moroso carb stud kit (part referenced 64919) is described as a stainless-steel carburetor stud set for Moroso dual return spring configurations, listed without a spacer plate. The overview frames the kit as a hardware solution for carburetor mounting where a dual return spring setup is used. The product description identifies the kit as the 64919 variant with no spacer plate.
ARP Moroso 64919 Dual Return Spring no Spacer Plate SS Carb Stud Kit