Series 3 109" rear tub support spacing

Evening all,
I removed the floor, top hats and steel supports on my S3 project today, but before doing so I forgot to measure the distance between the longitude supports.

Would anyone be able to provide me with these?

I cannot measure the holes on the tub, as most of them have given way to corrosion. I'm also unable to measure the chassis, as I'm building the project onto a SW chassis and am yet to weld on the additional tub support brackets.

What would also be super handy, is if someone could measure the distance between the brackets on chassis that the supports sit on.

Thanks