Even the writer confesses that the V8 is pure speculation on his part. Click bait.

"Ground Clearance (with 275/55R20 tire and 5.7-liter engine): 8.3 (210)- standard suspension, 10.0 (253)- air suspension (Pos#2)." The numbers following the mention of the engine are, by the way, in reference to the ride height of the car in inches and centimeters.

Strangely, this is the only mention of a 5.7-liter engine anywhere in Jeep's press materials. It's not much to go on, but this is an official release from Jeep. Confirmation? Maybe not. But enough to give us some ideas? Certainly."