There is a lot more to hooking up besides the gear ratio. The slingshot is so light weight that it does not respond like a car does. Keeping all that in mind you are wanting to do two sides of the spectrum so best to stay in the middle. The 3.73 or 3.45 are fairly close and any more than that would be spinning your wheels without doing all the other things to increase traction. The stock sling can easily spin the tires, I am very happy with the 3.73.
Sent from my iPhone using Tapatalk Pro