I have a Brand new BD Performance nv5600 6 spd manual short shifter conversion kit available , it is for the 99-02 trucks , they list new for $275 US , I will take $200 or offers , it replaces the stock shifter on the top of the tranny , the stock lever bolts back on top of it , it will fit the later NV 5600 but the angle of the shift handle will be different & may interfere with the seat or dash , the sifter could be modified to make it fit though
I will get a picture of it up as soon as I can get one resized
