Newbie, c15 help needed

Hello all...

I am new to the site and to tractors. I am looking to purchase a chassis to create an off-road capable RV. I have identified a chassis, a freightliner argosy (the COE fulfils my Max length needs), to create the build.

The truck has a 2003 cat MBN serial number C-15 and an Eaton 10 speed. I will change the tires/wheels to super singles and put tdm hydraulic front axles for a true 6x6 capable and perhaps 6-10" of lift for off-road clearance. The current rig is setup at OAL of 32'.. Which is perfect for me...

I am in need of advise including but not limited to the following:

1. I want to make the MBN a healthy mix of efficient powerful and reliable, I need help understanding what I need to do as I have read many posts about problems with these engines.

2. I would like to change to an auto transmission... Has anyone done this? If so, please explain.

3. Have you ever heard of anyone modding like this?? Any thoughts...

Thanks in advance!

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I have looked at the MTV 6x6 (COE) (5ton). It has a cat 31216 or C7, which, at the end of the day, is short on power for the 20' body I want to add to it... It is also AWD and no lockers can be modded... The 900 series has a long nose and makes my build too long OAL

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