I had mine turboed for over a year.
I used a IHI turbo from the 1.8L subarus, All the other stuff was custom made.
I ran about 8-10 psi, and if i had to guess. i was making 115 hp.
I absolutely could not keep a clutch in the car though. I went through 2 stock clutches, and then finally got a custom double sprung pressure plate, with Kevlar disc made.
The car never actually got tuned 100%, as i still had stock injectors in it, but i had a Greddy Emanage system installed in the car, which allowed me to tune both fuel and spark.
Even at a crappy state of tune (i would have to guess i left 15 hp on the table). i was able to outrun my buddies Legacy Turbo which ran a JDM ej20, and also USDM WRX's. The car was a rocket till about 100 KPH, which is where it completely ran outta effective gearing.
I took the car apart, to restore the rust, and continue modifying it, but i found a more practical car along the way (1988 Toyota Celica Alltrac)
Heres a pictures of my justy: