G-maxx entering ISC event in fontana CA

[Rivermaxx]

I just talked with john @ bsr and he is going to make me some custom shoes that should be about 5" in diameter. Is going to cost me around $120. But I got to do what I got to do. Thanks for all the help. As far as the gearing I have a 36 tooth mod 1 spur with a 25 tooth pinnion. This is what I come up with this @ 3 volts which is what Nic Case told me to use on brians calc :BTW I love this calc brianG thanks! !
Differential Ratio: 2.8461538461538462 Traxxas diffs UEs are too low
Transmission Ratio: 1.7222222222222223
Other Ratio: 1
Spur Tooth Count: 36
Pinion Tooth Count: 25
Total Voltage: 18
Motor KV: 2700 neu 1.5 d
Tire Diameter (inches): 5.
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0.004
Spur/Pinion Ratio: 1.44 : 1
Total Ratio: 7.05846 : 1
Tire Circumference (inches): 15.71 inches (398.98 mm)
Rollout: 2.23:1
Total Motor Speed: 48600 RPM
Vehicle Speed: 102.42 mph (164.52 km/h)
Effective KV Value: 2700
KT constant: 0.5 oz-in/A
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
Final Power: Amperage not specified...


Not sure if I want neu 1515 1.5d (above)or 1521 1d motor (below):

Differential Ratio: 2.8461538461538462
Transmission Ratio: 1.7222222222222223
Other Ratio: 1
Spur Tooth Count: 36
Pinion Tooth Count: 25
Total Voltage: 18
Motor KV: 2900 neu 1521 1d
Tire Diameter (inches): 5.
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0.003
Spur/Pinion Ratio: 1.44 : 1
Total Ratio: 7.05846 : 1
Tire Circumference (inches): 15.71 inches (398.98 mm)
Rollout: 2.23:1
Total Motor Speed: 52200 RPM
Vehicle Speed: 110.01 mph (176.71 km/h)
Effective KV Value: 2900
KT constant: 0.47 oz-in/A
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
Final Power: Amperage not specified...

Which route would you guys go as far as motor? Not to mention what batteries too use for this short blast high speed run. I need to figure out a aero dynamic body and get some spare parts just in case.