summit 1/16
 

hi i just got the summit im running to stock batts and i was wondering what a lipo would do and what size i can run

Lipo will give you more constant voltage over the discharge range, more capacity for it's given weight and dimensions, allow you to run higher voltages than nimh, and give better performance.

Are you running the vxl esc or the xl2.5?

vxl and it has the 2.4gh link