[Jacques Reed]

Hi Ian and Hanno,

Here they are anyway just in case:

Taken from a good F15-A cross member I salvaged.

A: Centre of rivet holes between frame rails 31-1/2" (camera angle a bit deceptive in photo).
In case you wonder about the photo, I took the measurements from the right edge of each hole which still equals centre to centre distance.

B: Overall length of rear cross member 32-5/8"

Therefore distance from edge of cross member to center of rivet hole equals: (B-A)/2 = 9/16"

Note: actual holes were offset less than 1/16" to the left side but that is probably just manufacturing tolerances.

Hope this is of some help.

Cheers,