I just installed the Weapon R's Secret Weapon Intake on my 2002 Gs300 the other day. It also came with a ram air kit which I did not install. Not sure if I am going to but have the option. Figured I would post some pics since I haven't really seen any on here. Overall the install took me about 45 minutes, was pretty simple and I had no problems. No CEL light came on. I can definitely feel a better throttle response and a nicer sound. Also opened up a ton of room under the hood near the headers. Overall I am happy. I know the intakes don't do much for the Gs300 so I did not want to dish out the money for an SRT. And now for the pics...

 

I'm thinking about getting this intake for my GS.

 

looks good man

 

I bought it because it was cheaper than going for the SRT. But I'm curious on how the SRT would have been

 

Just added the ram air hose to the intake. Didn't want to cut anything so I left the stock portion of the intake by the grill and put the hose into there. Runs great, sounds great, and slightly better throttle response