After looking at the pics I was WRONG! The 3020 and likely the 3010 were flat platform tractors with the shifter on the right side of the dash as mentioned already.
Seems large enough to be a 2520 too, never been up close to one to know.
The 2040 IIRC had the new style hood.
The 2510 and 2520 according to tractor data were similar to the 3020 using the smaller 2020 engine, so I agree since it has the two floor levers, range and gear sticks and a straddle platform much more likely to be the 2020 tractor.