Mike......The tie rod will rotate up and down an inch or so, but as long as it doesn't hit, it shouldn't be an issue. I would grind the shock mount a little (round it off) just in case it does, it will slip buy it. You could also grind the u-bolts a little to make them flat on one side.
You'll love the TruCenter. Make sure that when you mount the button, it's comfortably within arms reach and where you can reach it blindly.
I didn't care for the button they provided and used a momentary rocker switch that matched my others.