For sale is a welded auto diff (ratio: 3.9). In standard UK Spec abs casing with 6 bolt outputs, so a straight swap for a manual diff. (The black and silver one pictured). It had fresh oil in last year, no knocks, bangs or leaks.
It came off my s14(a), as I now have a 2-way. It will fit many other models too, but you may have to change back plates/ output shafts.
The auto diff is shorter in ratio than a standard manual, its the best bang for buck if you want to increase acceleration! (some say its like having an extra 50bhp...).
Asking for £100, collection (near Bristol) or I can deliver locally. No couriers please.