You don't say if it was the older 4 cylinder 2000 or the newer 3 cyl one.
If it was the 3 cyl model it might be like the one that was sold at auction recently.
It was a trencher built on a ford chassis and had an extra transmission behind the main transmission which slowed down the tractor but not the pto.
Otherwise, both model 2000s could have been purchased with an extra transmission in front of the main transmission which usually gave the tractor 3 ranges of gears - overdrive, direct and underdrive. Just like the old Sherman trans which were available from the N Series onward. Those were only available for the tractors with 4 speed transmissions.