First off its called a "Waag Sportster Bar" or something like that
It doesnt hurt the approach angle. It mounts from above the bumper and Between the tow hooks. There is nothing below the valance.
You can completely keep your tow hooks BUT you have to switch them side to side. One of mine had a factory cross-threaded bolt ALL THE WaY IN.
It was a major bitch to get out. There was a 240# guy hanging on my 3ft breaker bar and heaving on the thing and it wouldnt budge.
Also the other bolts have LIMITED clearance. Air tools would have made it MUCH easier. Other than that its easy to install. It took us 1 hour to get the dam tow hooks off and 1 hour to do everything else. Including removing and replacing the skid plate.
Oh and I was feeling sick so the lights took me about 2.5 hours to wire and I broke my switch and had to get another one lol.
Dont mind the clutter in the pics I cant seem to find my good pics right now. If you want closeups of the mounts or anything let me know.