This is for sure 1985. If you're interesting buying one, make sure the back tires have 6 lugs. Otherwise the axle is liable to break on the highway and kill you

I have an 85, identical, and yes, you must replace the rear with a 6 lug true dually. The "foolie" used by the RV manufacturer was not adequate for the vehicles weight. Toyota was generous enough to supply free rear's to the company for all recalls that were followed up on, a relatively small percentage from my observations sadly. Likely due to less stringent laws dictating any companies layout of a recall along with less media channels from which to make people aware. Oh, can't forget lawyers. If an RV builder today released a vehicle that required such service to be safe, the ambulance chasers would be on it like flies