Thanks bro for your comment. Anyway, they are the third party manufacturer that produces the same material with just a different name. well, i guess I have to recorret my threads' explanation on the name before I face any law consequences... Hehe... Thanks bro.
im using e3 engine with minor mod..juz s90 70mm throttle body, 650cc injector, emanage, and 86mm sr20 piston, toda 1.5mm gasket, hks head stud.. izit no problem wit my engine if im using ar70 gt35 turbo with standard...
Lately, I've been experiencing quite serious vibration when engaging 1st gear - I got to step on more gas before releasing my clutch to solve this problem.