Bl Mgt

Hey guys, (first post)

I have an Associated Monster GT on my hands and its beggin to go Brushless. Ive seen Batfish's GT and it looks pretty amazing. I was hoping/wondering if anyone has any advice for me. I have some questions that I was hoping you guys could answer if you don't mind:

What kind of Brushless motor, and ESC would be good for someone running 12-16 cells?
Would a centre differencial suit the application well?
What are some brands that are very reliable in this market?

All help would be most appreciated

Thanks,
Funk