Allison Questions

#1
Hi Allison Man,
I have some questions and I haope you can enlighten me.
I have a International truck with a at545. I hate this trans. There is no lock up and not enough gears. I have wanted to change to a MT 654. Where do I find the parts to do this swap. Is it the best option. Would I be better off changeing to a stick. Is it possible to find a trans with a higher top gear?
 
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