Well that will depend on the engine and chassis set up. I'm in the same boat as you. I'm ordering a few different sprockets and then I'm going to have to do a lot of playing around to see. I'll have a very strong engine that can pull a low ratio but I'm not even looking to go fast. I will be see what is ideal in 1st-4th gear. Hell, this is the first time in 5 years I've had 6th gear due to used to having an override.