Barrats final limit break----Catastrophe------

revisit north coral after meteor comes.

Aeris's final limit Break-----Great Gosple-----

Talk to the sleeping old man when the last 2 digits are the same

he gives you a piece of mithral.

take the mithral to the weapons seller and he lets you open one chest

Open the small chest to get it.

Red X111 Final limit---Cosmo Memory---

defete lost number in the safe in the shinra mansion.

Cid's final limit break---Highwind---

go to the crashed gelinka and retreive it.

Vincents final limit---Chaos---

go to lucrecia's cave on disk 2 then on 3.

Yuffies final limit Brake----All Creation----

after defeting goda in the tower.