K-FRAME STITCH WELDING......THOUGHTS?

Weld it all, and I see you have gussetted the steering box mounts. Also consider the larger 11/16 seamless tie rods from Firm feel.tie rods,. Also , this is the perfect time to check the torsion bar mounts in the crossmember. You may need to weld them as well.
Cross member is new, as is everything else on this pig!