Rocker Cover Screws, Which screws on the underside? Options

[Arno914]

Hello,

on my 1971/-4 I recently cleaned and resprayed the rocker covers.
On the top I have the correct hardware to attach them, plastic rivets and screws with spacers on each end under the fender lips.

In the bottom part, there are three large holes in the covers, apparently for M6 (?) size bolts (3 each side).
On my car however, there where 3 holes randomly drilled to attach the covers with small sheet metal screws. Seems to be "original". The fit is correct.

Question: Did the factory attach the underside of the covers this way? On the early cars maybe? Are there nuts in the longs for larger screws on "later" cars? (Mine doesn´t have them.

I added rubber spacers to help drain water and dirt upon reassembly.

Greetings, Arno

(IMG:http://www.914world.com/bbs2/uploads_offsite/up.picr.de-24260-1654156260.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/up.picr.de-24260-1654156261.2.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/up.picr.de-24260-1654156262.3.jpg)

[wonkipop]

don't know whats going on there.
the big holes are the factory locations.
factory used 6mm panhead screws (small bolts really with screw heads).
been thirty years since i took mine off to clean in there.
can't really remember whats in the longs but whatever it is it takes those M6 pan heads.
mine is a 74.

can't see why earlier cars would be any different.
i looked in the factory workshop manual before posting this to check.
it just shows the three panheads as per my car.

think that must be some previous owner mod.