Allison Transmission question

[CaseyC]

I am dropping a 98 International T444E 7.3L in my f250 that used to be gas. I am transferring all PCM and wiring over from bus. I am using my 4r100 transmission by putting my internal pieces into a 4r100 core 7.3 that will bolt right up to the international 7.3. So my question is in the computer of the allison transmission from the bus. Does the allison transmission run off the PCM of the bus or does it even have a computer? 2nd question will my 4r100 communicate with the bus PCM? If not I've talked to a company called US Shift that provide stand alone transmission computers but their concern is the PCM from the bus trying to communicate with the allison and its not there so will that cause any issues. Thank you for your time