aftermarket normaly u can get from perfomance shops.....original u can get from Motor Image or there is one spare part shop at Damansara uptown...can call and ask.
I got from auto enginuity... shah alam... good price lah, good guys for subaru... i dont want to talk prices on the forum, because i also nego with them... lets just put it as their price is reasonable...
I've heard that port bit of outter part to exhaust in the turbine makes air flow smoother.. is it true? but some say
it's quite risky because it might have some chances that the shell of turbine will get cracked.