well, heres what you can expect....
a stock h22 will make like 170-180 to the wheels.
with boltons, expect about 190-200 if you really do a lot of head work and stuff.
if you go full n/a and get cams and high comp pistons and the appropriate block work, you could make about 250-260 whp n/a but at high compression...
for the same price, you could build the motor for boost and then put money into a good turbo kit and be well into the 300's. if you had forged internals and new sleeves, the motor could be good to 500hp if you built it...
however, if you built the f23 with forged internals and new slevees, you could boost at 20 pounds and be in the 400's no problem, and never worry about having to replace a 2000 dollar stock engine. you would need a few hundred and bamm, another f23