i bought parts from hk last time. as soon as i speak the dude knew i'm from overseas. he may have ripped me off abit, but the parts were still significantly cheaper than what you get from perth. especially when australian currency are strong.

heres's one shop i've dealt with:

TOP RACING MOTOR PARTS
G/F. Tsui Yuen Mansion, Phase II, 85-87 Dundas street, Mongkok, Kowloon.
Tel: (852)27704812

www.topracing.com.hk

there another popular tuning shop in HK call "GT SPORTS" they have shops all over HK.