I bought all of this stuff to upgrade my diff, just never got around to installing it. I just sold my car and need to get rid of this stuff as well. I'm not looking to take a massive hit on it. It is all brand new, never used but i'll sell it cheaper then you can buy it online anywhere. The diff is for a base model, but if you have the factory LSD, Z1 sells the stub axel flange for 160 to upgrade your diff.
Here are the parts i have. I want to sell it all as a bundle. Make an offer.
NISMO Differential Cover with breather tube and Mounting stud -New $148
Quaife Automatic Torque Biasing (ATB) differential - New $1100
OEM Nissan Differential Bearings and Seals - $279 (plus extra ones)
OEM Rear Differential Ring Gear Bolt - $3. Ea X12
Whiteline KDT911 Differential Bushing Set - $88
Redline 75W90 - $12.95 each X3
Total all new is about $1700 without shipping. $1500 OBO
Adam