[glassdoctor]

I'm not one of hte emaxx guys here.... others are more in tune to exactly what you should upgrade.

For batteries I would say a pair of 8000mah packs would be good... and will give you the big run time you want... should do 30+ minutes of solid runtime.

The emaxx is well suited to higher kv motors. The 9XL would be perfect for you in a center diff style truck, but you might not be able to get the gearing tall enough in a emaxx with a stock gearbox/motor plate.

See what others recomend...