MM or 125B?

[Sylvester]

Hey guys. Im gonna be converting a hot bodies LSP R. Gonna be using a lehner 1950 7t, 14 cells and UBEC. I will start another thread with pics on build up and such once the truggy comes in. :004:
What do you think would run better on 14 cells? Im leaning towards the MM because of tuning and price. But the quark wont be near its limits - 14 cells is already over the MM's limit. I also have a couple of questions;

-Q1 : How do i disable the MM bec to enable the UBEC?
-Q2 : The kyosho gear mike stocks will fit the center diff, right?
-Q3 : What gearing should i run considering they are HB pro diffs. (46T gear on center diff)

Thanks guys. Should be a great christmas project :)