No problem on the DOM. If you want to tap it them I would use 1.25"x.375" for the steering. If you want to use inserts go with 1.5x.250. I have both.
No problem on the track bar, I have pieces threaded and then we bend them.
I typically use the ES2010 L and R but the 2026 and 2027 will be fine. They are just alot longer and more prone to bend from past experience.
Andy
