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I can't seem to find the spec for that tranny... I see the c7 can be squeezed up to about 375 hp... i also see allison makes a current 4000 series that will go up to 600hp... Do you know where to find the Allison spec for the MD-D7...?

I am looking at an fmtv with a cat 3126b or c7 and they all come with the 7 speed Allison MD-D7 transmission. 1. Does anyone know if you can direct swap a cattepillar c15 in this vehicle? 2. Does the c15, if swappable, bolt up to that tranny? 3. What is the horsepower and torque rating on the...