Interesting prospect for a towing only pickup. I do not know for sure but I'm assuming the Eaton would need an SAE bellhousing adapter plate, and of course clutch related components. Also you can't just bolt a transfer case to it, so I'm assuming you want to put it in a 2wd? If its the 06 4x4 in your sig then it would be a huge hassle trying to deal with a divorced transfer case.
While I think it would be cool, I don't think it would be practical.
That's an RT-6613, which is a medium duty transmission and physically smaller and lighter than the a normal 13 speed in a class 8 truck. I've seen and drove a few behind both the 5.9 and 8.3 in medium duty trucks. The Eaton-Fuller medium duty transmission line consisted of the RT-610, RT-613, RTO-610, and RTO-613, and the later revised RT-6609a, RT-6610, RT-6613, RTO-6610, and RTO-6613. The RTO series consisted of a 0.80 overdrive, the RTs are direct in the final gear. The 613/6613s were nothing more than a 610/6610 with an additional gearbox to give a deep reduction option for three extra crawl gears, where as a normal 13 speed uses a two speed gearbox to split the upper range gears only.
i would love to keep 4wd. i am still looking in what parts i need and how much modification i will have to do. i am look at getting the rtoo9513.
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