have got this for my mini-inferno, and works pretty good!
Here is the link.
http://www.hobbypartz.com/hobbywing-...ess-combo.html But the issue is that the motor shaft diameter is 1.5 mm rather than 2.0 mm, so that the stock pinion gear does not work on it.
Try an E-Flite pinion gear 14 T 0.4 module (the part # is EFLM 1902). This is a little bit smaller, but it has 1.5 mm hole on it. Put a drop of CA on the shaft and push the gear on the shaft. You should slide the gear very quickly to the proper position on the shaft, because CA kicks in 2-3 seconds, otheriwse the gear will be stuck on the end of the shaft.
For the battery, get 2-cell li-po 1,000 mAh or a little bigger capacity with 20C or 30C. I recommend Turnigy li-po batteries from Hobby King. Those are cheap, and work very good with this BL system.
All of these have been working on my mini-inferno pretty good, and my little daughter really enjoys running it!
I hope you enjoy it, too!