subwoofers

How big is my stock exhaust tip on my 2000 es300 lexus? And how big is the tip on this exhaust from l-tuned parts, and how does this exhaust sound? http://www.l-tunedparts.com/product/?id=2828

Can I put a 97-99 front lip on my 2000 es300 lexus from l-tuned parts? http://www.l-tunedparts.com/product/?id=2709

Also I want to change my interior lights to LEDs. I want to change my front dome, because today I bought the wrong LEDs and didn't match my center dome. My center dome is like a hyper white color, sorta on the blueish side/egg white. I was wondering if anyone knows where I can get these light bulbs, soo I don't make same mistake twice.