Windscreen Header Rail fittings and fixings

[Zaphod]

I am looking at the final part of my headlining replacement which is the windscreen header rail. What I am wanting to know is how are the tags that locate in the door weather strip fixed, I know they are riveted but from memory they had headlining material under them when I took them off, meaning they were riveted in place after the headlining had been glued on. can this be done before gluing the main part of the side section in place?
As supplementary questions.. what size rivets hold these tags on and what size are the self tapping screws that hold the trim to the body header rail?

[Zag]

Originally they were under the headlining, I wasn't confident enough when I did mine (the original was too far gone to use as a template) that I put them on externally after glueing and you don't notice them (IMO).

3.2 mm pop rivets IRRC, mine weren't screwed, just held in place by the door seal (86 my)

BTW I also can't sew so did it in one piece, looks good and no worries with it sticking either

[MetBlue]

Later cars didn't even use the clips into the door seal, so as long as it looks good, I wouldn't be too bothered.

[Zaphod]

Later cars didn't even use the clips into the door seal, so as long as it looks good, I wouldn't be too bothered.

How much later, mine is an 89 with the centre bonnet vent, not sure they went much later, and it had them!

[Alan_M]

When I did mine I glued the material on and then riveted the plate from the rear with small and shortish alloy pop rivets. The bump under the material wasn’t noticeable.