We were able to measure the distance for you from the top mounting holes to the top of the very top of the Curt RV Bumper Hitch # C19101.
As you can see by the accompanying diagram, the distance from the bottom of those mounting holes to the top of the hitch measures 1-1/8 inch so you will have enough clearance for the hitch to be installed without any interference.
I have added a link below to a video review for you to check out as well of the Curt RV Bumper Hitch # C19101. view full answer...