The S019 uses the non hitch frame rail inserts.
Photo credit to AVHemi. I would like to find the factory frame rail inserts. The two pentagon inserts have support for two more bolts each. I assume those two bolts allow the OEM hitch to reach the max 6000 lbs limits. Since the M54 is limited to 5000 lbs, the S019 is okay for my use. For anything more than 2500 lbs, I'll use m HEMI truck.
