What SWAY BAR to choose

All the Hellwig bars are that hammertone finish as far as I know.

As far as looking more original, it’s not going to be a big difference. The 55917 is a little larger in diameter and narrower. That’s it. The 5906 is a larger diameter than the original, it just uses the wider original 67-72 mounting tab locations, which also limit tire width. Although if you’re staying with 15” rims the tire width issue won’t be a problem.