I'm not sure if it was clear what I was asking the way I worded it, but there are 2 different styles of pins that attach the rods to the center carb. One type is a pin with washers and a cotter pin, the other type is a bolt and locking nut (it has the nylon insert in it), like what the reproduction rod kits come with. Was the cotter pin type for the a12 cars only?