Hey guys, 1st time post, I have a 2003 ES300 with halogen headlamps. I know Lexus offered HID as an option on this model, but before I go buy them, how difficult is it to replace the halogen headlamps with the factory HID headlamps? Is it as simple as ordering the HID headlamp assembly's from the dealer with the ballasts, bulbs, etc. and swapping them out? Or does it entail extensive electrical and body modification.

Also does anyone know if the 05+es330 HID projector headlamps will fit into my 03 ES300?

Any help will be appreciated!

btw: I am not interested in putting HID bulbs into the halogen housing...been there done that. Just in upgrading with factory parts.