Unless DRV has changed things, when you get the Upgraded susp with 17.5" wheels and on the MS it was std on all 38' you get disc brakes.
If you have the trailer have a peek at the wheels, you can see the discs. If you don't have it yet, call DRV and ask what they put on.
Don't know what controller you have, contact Kodiak and see what they say is compatable. Might be time to upgrade to a better quality controller. P3 is good for Elec/Hyd use.
Bill
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