Dont know if this would help or not but astroflight makes
a brushless motor for the t33 and f16.The motor comes with
the brushless controller and still takes the 7-cell pack.
For a battery you should try nihm pack lighter meaning you could
add a higher capacity battery into it or have highter performance.
www.astroflight.com
get some nice 3000 nihm's zapped from:
www.electricjetfactory.com