pinion flange

Putting a 4 spd in my ‘71 40, with a 3 spd TC. Keeping the 3 spd brake drum. Looking for a couple of 4 spd drive shafts to allow me to shorten the rear and lengthen the front on mine. Need pinion flanges as well if anybody has those used. Thank You

Just documenting this for future searches. IME the original rear pinion flange nut (at least on 95+ FZJ80's) uses a ~4mm thick plate washer as the original nut itself is not flanged. That original part number 90179-22011 (at some point in the past) has been superceded to 90179-22016 but the...

So I have been feeling a super subtle vibe when letting off the gas going down hill over 100kmh. it is very subtle like running over a patch of ruff road. I though it was maybe bad u joint and took the shaft off t check and found that there is a tiny amount of movement between the pinion flange...