Combines When did 1660 go from horiz clean grain hopper load auger to inclinedIJ

[boog]

I owned a '89 1660 that had the vertical inclined auger in the grain tank. boog

 

[4020dt]

The incline auger was an option , my '91 has it , bought it used , it has the whopper hopper on it and I'd say the incline is a must with the big hopper . The squirrel cage fan like the 66's have was a kit that was put on later , as far as I know there were no 1660's that came from the factory with the new style fan .