first things first,
have u ever changed the ATF or the ATF filter?
at what interval?

Osram is better. 

---

Added on November 21, 2011, 10:20 pm
how far have u travelled in those 6 months?
get an ATF cooler and try flushing the gb and change ATF and ATF filter again.

u mean Anti Roll Bar (ARB) or strut bar?

if u mean ARB (thin bar located underneath the car which connects the right and left lower arm)
ARB only has 2 types. front and rear, hehe..
anyway, if u wanna change ARB, change rears first, then only the front.
get rear ARB with 16mm thick from Ultra Racing is enough already to replace the 12mm stock ARB.
for fronts, u have to use thicker than that.

if u mean strut bar (bar that fixed on top of suspension mount)
front strut bar u can get Ultra Racing, either 2-points or 3-points.
or for nicer look, get galant VRG strut bar (2nd hand cost about rm200 in mudah)

rear strut bar get Ultra Racing. either inside boot or inside car (just under rear windscreen)

normally any workshop experienced in doing engine mod can do it.
where do u live?
if in Klang Valley, then i can recommend 2 workshops that are expert in everything Perdana..

the cost now from rm3.5k to 5k (siap pasang) depending on the manual gb model/code (which defers in terms of normal duty or heavy duty, or short ratio or long ratio) and depending on other parts (parts for gear lever and pedal from Eterna/Galant cost more than modding it from a Lancer/Evo/RVR..)

hello bro..
i'll pm u the addresses.
they dont have disc brake skimming tool but they usually call the uncle who comes to the workshop and do it there.

my trusted mechanics:

Mr. Man - maxis.239.0523
Sime UEP Industrial Park, Shah Alam

Najib CAS - celcom.635.1938
PJS3, PJ