Going to take the plunge and convert my XB8EC

Guys, are these numbers accurate?


Differential Ratio: 3.33 (From X-Ray site: Primary Ratio) Correct figure here?
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 40 (From X-ray site)
Pinion Tooth Count: 16
Total Voltage: 18.5 (5s lipo)
Motor KV: 1700 (Neu 1515 2.5d)
Tire Diameter (inches): 4.5 (Standard 1/8 buggy rim/tyres?)
Tire Ballooning(inches):0
Motor Current Draw: 0
Motor coil Ω: 0.01
Spur/Pinion Ratio: 2.5 : 1
Total Ratio: 8.325 : 1
Tire Circumference (inches): 14.14 inches (359.08mm)
Total Motor Speed: 31450 RPM
Vehicle Speed: 50.57 MPH (81.24km/h)
Effective Speed Rate: 2.73mph/V (4.39kmh/V)
Effective KV Value: 1700
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...

If its fairly accurate, I will be getting about 50mph!!!!!