Short update... The rear arch garnish trim piece isn't worth me copying to fglass as anyone can make the piece from panel board and glue fabric on it which is what this is.
I've still not got to check the holes spacings as been busy painting my mk1 van.

I got word my local trimmer is not So booked out so I've FINALLY removed the hood lining and measured the spacings in the rear compartment. so from the middle roof support rail there is one rod that's 38cm forward of Centre. And the last rod is 39cm from Centre. I can put a pic of the rods in sequence if needed.

"as anyone can make the piece from panel board and glue fabric on it which is what this is."
 
The original Ford garnish above the rear doors was just cardboard/panel board with the moon crater material glued on with contact adhesive.