the kia soul 6 speed manual makes a great 4 down towable but no where in the owners manual does it state that. It only states not to tow 4 down with automatic transmission. maybe the 2020 manual is different, I checked the 2018 manual.
2018 Forest River 2851SLE "Forester" E-450 Class C , Sumo Springs bump stops Front & Rear, Hellwig Sway Bars Front & Rear, Bilstein HD shocks front & rear, Roadmaster Steering Stabilizer, alignment set to +5 caster. (that's it, out of $$$)