Well... i think the f20b is a good engine. I love the high revolution possbility, the sound, everything.. how the engine kick ass too... but this engine have a big lack of torque,what h22 do not have. To patch thisproblem, you need a kick ass tranny, T2t4 or M2b4 (i have the t2t4)... I have the SIRt engine...
The problem is really all the parts if something broke.... like the piston, its aonly use piston and came onl from F20b SIR-t (if you have the sir-t) or from the SIR (if youhave the Sir version) you can't take another piston kit... and the problem is, the f20b is only a JDM engine, so the parts are damn expensive...
The engine is more expensive to buy too... (well, in quebec)...
But if you're plannign to go Turbo, i think the f20b isn't a god optio take a H22 closed deck... becase the SIR/SIRt engine have open deck and high compression.. maybe a bad mix... but anyway, iam pretty sure this engine can take a 7-8lbs boost with no problem!...
If you need more information, let me know... i do not know what to tell ya lol