4AGE with Eaton Supercharger?

[Uzelac]

Okami, take your time and get to know all options.

T50 transmission will not survive long abuse with turboed 4AGE.
If you change transmission, here comes rear end (LSD, halfshafts).
If you change that, you will need more braking power.
If you make it that quick, it would be wise to have rollcage.

After all that, your car cannot be daily any more....

I agree with NoHachi about "sweet spot".
150-180 bhp is extremly fun in AE86, and you will preserve reliability and drivability.

Personally, i would go to different engine/transmission if in need for 200+ bhp for "everyday".
And there is insane number of possibilities for engine/tranny swap.