TIP:
The PX models use a total of 4 screws, here the set is needed 2x.
The older models such as Rally, Sprint etc. use this type of screw only for the lower mounting brackets, i.e. here only 1 set is needed. The upper hexagonal fixing bolts are located in welded-on sheet metal pockets and are secured against turning by the rectangular shape of the pockets. If a luggage compartment is to be retrofitted on models without such a compartment, these pockets (not available as a spare part) must be manufactured and welded on, and the holes for this screw set must be drilled in the frame.
This should ideally be done before painting a restoration.