[Ralphy]

CSXDreamer
Tapping 34 Rc should be no problem. I've tapped 58 before more then once, takes a sh!t load of taps. You get maybe 1/4 turn.

If you do use a cut off sway bar, it might be better to hex the ends.

Also when your looking at steel the last 2 numbers represent the carbon content. Mild steel say 1020 has I think .20% carbon, 6150 would be .50%.