Lower fender brace on door dogleg is missing ??

[Green Machine]

Pics 1 and 2 are of the right side, 3 and 4 are the driver side on my 1970 C10. The right side has a brace or additional support where the lower fender attaches. The driver side does not have this brace. It is mounted inside of the dogleg and is held on by 2 bolts that go thru there. The only other reference I have is my 68, and it is on it's 3rd set of rockers so I don't know if it ever had these. (it doesn't now)

This cab appears to never have been repaired, did the factory forget the left side extra brace ? Are these needed ? Anyone have one if it is needed ?(I'll post in the parts later if needed, since I am paid now) And when I get the rockers, inner rockers and cab supports replaced/fixed shold I expect to see the bolts in there like factory or is welding only acceptable ??? Thanks in advance.