X-5 Gearing for different motors

[cutting edge]

I am getting an X-5 for Christmas ,planning on building her on Boxing day i was wondring what Spur gear came in the Kit ? 48 pitch or 64 I hope its a 48 ????

I will be powering her with either a Novak 5.5 Brushless
or a Keyence running a 19turn Spec or a 12 Single
I was wondering about gearing for the above i have read the post and printed the Gear chart but it does not make perfect sence to me yet
I normaly use www.Gearchart.com to work out my ratios but there seems to be different pully sizes that can be fitted

If some one could help this would be great as i don't want to build the car then on the first meet have to change the Spur gear after setting up the slipper ect.......

Hope all the above makes sence Thanks in advance a new X-Factory driver

Happy Christmas to you all