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You need.
S1 RB25box and yoke
S1 Rb25 box clutch slave
Navara speedo drive (code is somewhere on here) -(pics are also somewhere on sau, might take 30mins of searching tho)
Custom/shortened tailshaft
Move the cross member
Modification plate
I seriously cant think of anything else we needed. While its out tho I would clean up or get a new clutch, and machine the fly and pressure plates back. Just saves on money. I would also put a cheap oil in the box for a month or so, cleans it out, and you dont throw away good money on good oil if the box is stuffed.
Good luck!