Try to see how the new front hitch would mount bc they tend to reduce ground clearance as well as the rack itself.  
When I was using a front hitch/rack/box setup on my HD p/u , I found that I had to be very careful with driveway aprons and steep street intersections .  Sometimes parking in lots where curbs were involved. I once bent my anti-rattle device so bad I had to cut it off.
  
I ended up changing the rack to an ATV rack with a rise, but it did block the radiator airflow and I noticed the temp difference climbing hills.
 
I added large diameter bent PVC tubes on the front box sides to redirect airflow towards the radiator but it did not help as much as I hoped. 
Drew, add birds and bats to that road dirt list , lol .    
 I eventually scrapped the idea fearing excessive tranny temp damage.  I also had the additional external tranny cooler as well.
 
End result:  Using the riser style ATV rack for me was not a good idea bc it  decreased airflow but offered more ground clearance.   I guess the box might work better on some chassis and maybe not so much on others ?