If your really want to fly and have awesome power. You could step to a 7xl with the 9920. I don't know how fast you want to go. Or what your truck may weigh. My brother runs a 8l on 12 cells on his emmaxx. It is a big difference form hv. It is harder on the drivetrain though like serum said. I had 7xl with 18 cells and i'm pretty sure i was shooting in the 50s.
Peace!
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