New to the club. Looking to install a lip kit on my 07 is350. Do most kits involve taking the bottom part of the stock front bumper off? Also, any good sites to find after market parts? Help me out here thanks guys.

 

Welcome to our forum and hopefully you will find lots of information about your car.
I moved your tread to IS specific forum. And try use search function, your question prob has been discussed many times.

 

Yes you need to remove the bottom pieces, I got a complete GFX kit available for sale ready for paint.

 

I believe most lip kits will require you to remove the front.
i know for sure the ings body kit doesnt require the removal of the front lip