The 7.2 tail motor has the same mounting holes as the stock motors. The 7.2v is mostly used for lipo's that run 8.4v or 11.1. It should work with your 7c pack.... uh 8.4v so yes, it won't burn out like the stock motors tend to and will have the power to run it, although with a direct drive setup, the 700mah battery won't last as long as it did with the stock setup