Check out www.starluckrc.com
They might not have it in stock on their site, email them to see. Their prices are great and the owner is very knowledgeable on brushless stuff. I bought 2 of my mamba's there.
For the Mini Inferno, you might want to go with a mamba25 esc and a feigao 400 size brushless. I've heard these ran awesome on the Mini Quake. Might want to email Jamie at starluck to see what he thinks.