I could have sold you my '93 for $14K and it was already a 12 second car with lower milage.

To get in the 12's..
Intake
Full exhaust ~ $1000
JWT ECU ~ $550 (I think)
Boost controller ~ $330
Clutch ~ $400


These prices don't reflect any install charges you may incur if you don't do it yourself.

Let me know if you need any parts.

Also,
Harry (Z Tuner) on this site can work on the car for you. He and his brother Ricky know the cars pretty well.