Goose mouth dimensions / help

As you can see from the photo of my car (Red) the previous owner had opened out the mouth underneath so instead of the lines following the line of the grill they went the other way to widen mouth opening and he also extended the edge forward to produce a more pronounced scoop and greater area.

I need to change this back to original.  I’ve look at a lot of photos and guess what?  They vary! Where have we heard that before?

If anyone has a Goose they are confident has the original dimensions on the mouth / scoop could you please help me with measurements  as follows (see photo of blue car)

The triangle formed by A,B,C I need the distance from where the mouth touches the from panel  at A to the edge at B

I then need the distance B from lip to rear where it meets the grille C to B.

I need the width between B and G

I need the distance from the back of the grill to the lip at D E and F (midway, 1/4 and 3/4 across)

And then I need the same distance H to G and J to G the other side.

Then to check I need the distance K to E bottom of lower grill panel to lip at the centreline (my annotation not quite centred I think!)

Also 4 additional questions:

1) Is the lip a rolled edge ? - I think so

2) There are 8 x holes in lower panel, anyone know the diameter of the holes?

3) Some cars also have 2 x holes below the brake vents , those holes look smaller anyone know the size (or confirm they are stock?)

4) The slope of the edge of mouth doesn’t quite seem to follow the lines of the grill slope (which would be logical I guess) but some cars the slope line is slightly inside the grill line and on others slightly outside, although of course this could be repairs and camera angle - what’s correct, inside outside or in line

Thanks in advance everyone

Cheers

Larry

C