Interchange of parts?

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Scotty.92

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In my truck, I have an NP263. Its a 98 sierra with the push button no autotrac. I also have an NP261-C from an 88 truck. I need the spline input shaft from the 261 because of manual transmission swap, but I think it would be easier to keep my 263 and maybe change input shafts if thats possible? If I cant do that, how would I deal with the wiring? I have heard they are different over the years. Any help would be great!

I will also be getting a posi-lok sometime, so front diff actuator is not a problem.
 

98_k1500

strange noises are normal
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Im afraid you are going to have to try it and see, this has been discussed on here several times and have not come across anyone that has actually done a transfer input swap. Local trans shop may be a good place to ask and see what their input on it is.
 
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