windshield frame/upper a pillar/lower frame

[hemi43]

You don't need that 5 piece kit.
You're very fortunate that it's in such good shape and will be an easy repair. Cut out all the rot, clean with phosphoric acid and fabricate new pieces to weld in.This can be done in less than a day.
Don't weld that gap if you want the truck to look original, and make sure you use a 2 part seam sealer.
A replacement windshield header will never be as good an anything OEM.