Yeah sure. Add that to the already extensive list of things needing to be done to the V5 packs JUST so you and a few others can be happy.
I was going to say it's so simple. That however doesn't seem to be the case other wise this annoying issue wouldn't continue being regurgitated...
These packs are for 0.37 ONLY. If you do not wish to downgrade your version of RoR for them to work, then that is your problem. It's been specifically stated countless time yet people seem to ignore this and instead expect the creators to kiss there arse to make it work for other versions of RoR.
Most league owners, racers/participants, editors/creators, etc. use 0.37 because, as it has been stated, it is not only the easiest version to work with, but the easiest on ya'lls CPU's.
So either do as mason suggested and have multiple versions, or don't. Just don't complain to the creators if this content doesn't work the way you think it should for the versions of RoR you think it should. That'd be a product of your own stubbornness.