Running board length

[mikes48]

I'm looking for the length of the running boards for 48 with a 108" wheelbase. Unfortunately the dimensions on the way back site were not legible. Any help would be greatly appreciated. 

[Lingle]

for some reason I had this body builder layout PDF on my laptop(I have a B3F but had this one as well), dont know if it will help but here it is attached.

B-108 WB.pdf

[mikes48]

Thanks, I have this drawing as well, it doesn't have the running board information on it.

[Los_Control]

I have 63.75" from mounting surface to mounting surface.

Is that what you need?

[mikes48]

Yes,that is what I need. Thank you.