all? front upper/lower,rear upper/lower + bennen strong bar?i want to corner hard, by having all will that increase or decrease my handling? is there a good combo?oh yea there on a 92 civic si hatch...

 

first things first bolton the typer rear sway bar, and the 99-00si front which is bigger then the type r then you make the call!

 

5G Civics do have a good bit of chassis flex, so you may notice a handling improvement. However, the difference will be negligible compared to installing a set of sway bars. Since you mentioned "aggressive" handling, chassis braces alone definitely will not provide this for you. IMO, build the suspension first (struts, springs, sway bars), then add chassis braces where needed.