This forum is great for research.
We test drove a 31V this past Monday fresh from the factory, I can confirm that the JRide is a still "just" a sticker on the side, of a 2021 31V V8 model too, as in prior models.
Seems even with the new V8 chassis, you'll still need to invest in a steering stabilizer and a rear trac bar at a minimum. There was also play in the steering wheel, maybe that's due to initial "skipped" alignment/balance I suppose. Dealer parts person was not keen on the CHF, for what that is worth.
2021 31V (30amp) and the recent tweak of the 2021 FR3 30DS (50amp), I'd rank in top 3 of the intermediate-spacious >=30' price range Class A's;
Check out the huge display / splash guard on the late model 2021 FR3;
https://my.matterport.com/show/?m=Rh4v8xSuprh
...Jayco needs this on the 2022's, etc..
Anyway, back to the 31V, that Godzilla engine sounds nice on these V8's. Oh, the V8 spark plug issue is also resolved on these newly released 31V's. Also had to re-attach the Bluetooth mic as it was hanging down behind steering wheel. Was also noisy/squeaky, probably needs Koni/Sumo, etc.. still too.
Over and out.