K frame repaired

Okay...I was in the process of KH SBP disc change over on my 72 Valiant, and decided to redo ball joints, bushings, ect. for the sake of safety. I have found what appears to be repairs to the K frame. The tab for the idler arm looks as if it was broken and welded. It seems strong enough, but I'm wondering if I should bother spending the time and money redoing this front end. Not looking to race or restore...just cruise nights, driving around, and not fuss over it.
Should I bother with ball joints, bushings, discs, and stuff, or just put it back together with the 9" drums, or something else?
All feedback is appreciated...