Sway bar rubber bushing replacement

Nah, that's factory, 72 and earlier. B body is similar.
I cut vertically, with an .045" wafer wheel, straight down through the weld like in the last photo. I cut a pair of opposed slots in a 2.5 lb plastic Folgers can for the sway bar. Filled it w water after setting the bar, new bushing and vise-grip clamped where I cut the original weld. The clamping was the hardest part. Then I welded the new one in with it half under water.

My new ones are Energy Suspension, poly. Their instructions say - 1. Clean the bar so the new one can slide. This is important. Right before the ends, the diameter is slightly smaller. Apply the supplied lube and squeeze with Channel Locks with the bracket close to the end, then slide to the correct position. Don't get the brackets backwards, there's a L and R.