I don't have your rig but went on Weathertech.com and they have mats for the 3500 Promaster. Give them a call and if the seat bases will fit they will tell you. Have had good customer service and in my last three Jeeps with no fit problems.
Worth a call!
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2017 SLX 195RB
2021 Jeep Grand Cherokee Summit L 5.7L V8
Andersen WDH hitch, Renogy 100 AH Lithium &
200 Watts solar panels from Renogy
Prev. '14 Jeep Grand Cherokee Overland, gas 3.6 V6
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