I just did this swap on my NP271D when I did the auto to manual swap.
My input shaft is OEM, made in USA. Your pics shows its different than mine. It have what I believe look like a freeze plug in middle of it.
Word of caution, find & buy your input, rear output, maybe front output shaft seals. They're dealer only parts so have them ordered ahead of time.
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1997 2500 Club Cab Long Bed 4x4 | NV4500 | D80 w/ TruTrac | D60 w/ 4340 35 spline shafts | Ford knuckles | Yukon Hardcore locking hubs | 1pc Aluminum 1480 joints rear shaft | NP-271D | BHAF | 4" Exhaust | AFC LIVE | Mack Plug | 5x14 145* | 7mm DV | 4KGSK
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