that gs is nasty. i own a 2006 gs300 awd stock. im thinking about tuning it. what should i get? what is that thing that really makes a difference in performance? what about the wheels? i like 20s but wont it affect the drive? should i just get 18s? i want to get top and bottum mesh grill without the lexus emblem, think that would look hot. also want a cold air intake. can anybody recommend a good one please? thanks

 

If you have awd you might not want to lower it. AWD owners experience vibrations that apparently won't go away. Some people put up with it but many return their car to stock after trying to deal with it.
Without being lowered, the car doesn't look as nice with 20's. But imo, 20's always look better even on stock height. You can compensate by getting slightly thicker tires to fill the gap.

Anyway, just wanted you to know.

 

Looking nice, great color combo. Way to keep it clean

 

all around,great job!!