I just cut the scoops off on my Interstate to use the lower engine guard to mount my Hwy pegs.
The purpose of the scoops has never been satisfactorily explained; and they are completely unnecessary.
My Hwy pegs are identical to yours, except I have Kury Dually pegs not Iso wings on the offsets.
Beware that if you ride those pegs in twisty leans they can touch the road (depending on how they're mounted).
You want those offsets near the valve covers, but obviously not touching them.
The idea is to cut the scoops off without damaging the guards. The scoop weld bead to the guards is quite robust and if you go after it when cutting off the guards initially, you can cut into the guards doing it. Better to cut the scoops off first, then go after the weld bead carefully. That weld bead was tall enough to interfere with proper placement of my Hwy peg clamps, and I had to do quite a bit of careful grinding and filing to knock it off. The resulting damage is way down low and only visible from the ground. You may want to paint it with clear nail polish (or something) to inhibit future corrosion.
I cut mine off with a cheaper Harbor Freight 110 Volt grinder/cut wheel. You need eye protection with that thing, and it puts off enough fiery sparks to set you (or your beard) on fire.
