Well I can't think anyone knew that on the farm I worked on. It was a multi power and ipto so did not need the 2nd stage. It did pull quite well but not so nice to drive as the longer 188 with PAVT and front wheel weights.IIRC you could have the pedal in a lower, more comfortable position if you didn't need the travel to get the pto clutch.
I'm watching 'our man' Guy Martin building a tank at the mo, when he's finished I'm going back into the office to see if I can find what we paid for our 165.