HELP!!! Is this suspension safe?!

Looks like **** work to me!

Based on what? You can't really see the quality of the welds in his pictures. Spray some random undercoat and let things surface rust a bit and everything looks like crap. Yeah, the tubing added to the frame wasn't cut back to be flush with the frame, but so what? Doesn't hurt anything as long as it doesn't interfere with the caltracs.