I've seen previous posts in relation to the type of tennax fastener (self tapping or nut) for use with the tonneau but I have another query which relates to the location of the fixings. My 59 3a has a single hole in the drivers door which corresponds to the lift the dot fastener that is on what I have been told is the original tonneau cover. Conversely, on the passenger side there are a number of fasteners but owing to the fact that I've had to replace my passenger door during my rebuild holes w