Which traction bars to keep?

As others say the middle set is better, then too, more involved.
For just "a fun driver", I wouldn't sweat that bumper location so much. Many didn't way back.
You could always measure them up and add length before you install.

Looks like the shock plates are drilled for "J" bolts as well if ya' get more serious.
Here's what they look like installed..........


Consider the outboard clearance for your tires/wheels with use.