It's been done on a few occasions, I was planning on doing the project for my GS but totaled the vehicle before I could. You can read about it here (https://www.clublexus.com/forums/gs-...-retrofit.html). However, another CL member did implement it successfully, see post #51 in that same thread.

It's really not a project I recommend you take on unless you are confident in your abilities, you have a TIS subscription, can read schematics, create wires, think on your feet, etc.. I would highly recommend trading your current vehicle for one that has DRCC+LDA factory installed. You will lose some money you invested, but you will save a tremendous amount of time, headaches, and stress. As someone who has ripped apart his vehicles countless times (example: https://www.clublexus.com/forums/gs-...sassembly.html), some projects are better left alone. Of course, this is just my opinion.