Avtr model having more option on cabin, length. Gearbox, fuel tank and etc.. And Non - AVTR model having no cabin option and option is less than AVTR model
While I was joining in ashokleyland in 1980, goods chassis (comet) price is around 2 lacks (if I am correct) only 2 models comet , and viking passanger , then tusker , tusker mark 2, Taurus model has two differential, so power is very nice, but unfortunately that model was not successful, after that it was modified as multi axle , now it is known Taurus.