Hello all I have a 2000 Z24 5spd and I'm putting together my suspension plan Tein SS 2" drop(tax purchase), Vibrant front & rear strut bars(installed), RK Sport upper& lower motor mounts & Frame brace(installed), Prothane poly trans mounts(installed), custom 1.5" x 1.5" frame connectors(installed), Team Green LSD (next purchase). What size and manufacturer should I go with for sway bars and what came stock on the 2000 Z24?  
2000 Z24 5spd header & catback for now.
 
Read the FAQ. Stock size is 22mm.
 
 
Ok I read the FAQ and it says that the STOCK size on a J-Body is 22mm... Is that still the same for the Z24?  I thought the Z's had an upgraded suspension including sway bars over stock... is that not correct?

Knowledge about everything and yet an expert of nothing!!
Jack of all trades.  
 
 
22mm is stock on my '01 Z24.  Base models with lower grade suspension package had like 19mm bars I believe, or possibly 18mm.  I know my buddy's '03 LS Sport has the 24mm.
 
 
FE1 is 18mm 
FE2 is 22mm
your Z24 could have either 1
 
 
 
Year   Cavy    Opt   Bar          Suny
95-02 Base   FE0  No Bar
            LS       FE1  18mm     SE
            Z24     FE2  22mm     GT
03-05 Base   FE0  No Bar
            LS       FE1 19mm      SE
            Z24     FE2  24mm     GT
And just because you have a certain type doesn't mean a suspension option was added. So check the label under the spare tire cover for the FE# code.
Also, some Sunfires came with the FE0, even though SE was supposed to include FE1.