No way, sorry to break ur dreams. Anything better than .18, wont fit into ur stadium truck. The motors shaft wont fit, you would have to do hard core modifications. I've got the X-Cell, and that motor is still pretty fast. But if you want a aster motor, try an O.S. 18, more bottom, but no more top speed.
I'm bummed too!!
X-Cellerator
Savage 25