so far i know all adjustable is serviceable..there is one shop in ampang or pandan tha even can service your original oil type absorber..so i think if you are planning to use adjustable should be no problem..
Greddy never make the suspension for Proton. Toyota, Mitsus and Subaru are. They just don't recognize what Proton is. If there are Greddy for Proton out there, surely it's a fake. Better go for GAB. Hi Lo series will cost about RM17++ sumthn.
