I nearly forgot I had a membership on this forum it's been so long! LOL
A little update...
The Nissan 370Z that I had since new for a few years has been sold, and all of the audio equipment went with it. The Lexus LS430 is now my daily and I'm finally getting around to doing something with the system. I'm going in this Friday to Five Star Car Stereo (again - Took the Z there a couple years back https://www.youtube.com/watch?v=h7lY7hd2kf8 ) for a head unit and installation.
I'm going with a Kenwood, but a discontinued model, though it is still BNIB. It's one that they have in stock, and with the cost of the unit and install, I couldn't pass it up. It has and does everything I need it to do, so I don't care that it's a couple year old model. It's the Kenwood eXcelon DDX795. It accommodates front and rear cameras, so I'll do that as well, though I never mentioned that to them on the phone when I made the appointment, so will probably have to do that on a different day.
As for the rest of the system, everything is still up in the air. I'm not 100% sure on what gear and what direction I'm going in. All I know is that it's going to be like all of my other systems, designed for SQ and as stealth as possible.
The only issue I'm going to run into is figuring out what to do for the front tweeters. The stock front tweeters are mounted in the dash which can not be uninstalled from the top. From what everyone says, the entire dash needs to be ripped out of the car to get to them. That's just utterly ridiculous, and I'm pretty certain I don't want the tweeters blasting into the windshield anyway, so there's that. Not to mention that the stock tweeter grills are oval. Keeping with the stealth theme, I'm really at a loss on what to do. As much as I don't want to, I might have to have them custom mounted into the A-pillars. They have a velvety type of material on them, so that would have to be sourced to recover them, and light tan grill cloth over the tweeters. Ugg...
I still have my Helix DSP.2 that I only used for almost a month in the Nissan, so that will be going into this system. From what I've been looking at, power requirements and size concerns, I will most likely be using a couple of Rockford amps, a 5-ch and a 2-ch as I will still be using the rear door speakers for when I have my family in the car. The rest of the time, they will be off. I'll be going with Stereo Integrity mids and tweets again up front and who knows what in the rear doors. Probably just whatever Five Star has for cheap since those don't really matter as far as sound quality is concerned.
As for bass duty, I had planned on going big or going home, meaning a pair of 12's or 15's in infinite baffle, but I might just go with a single 10 (or 12 if it can fit) on a custom baffle in the rear deck. I don't play music super loud these days (even on my home system which can play loud very easily), and the interior of this big body LS430 is pretty darn quiet anyway, so maybe a single 10 or 12 will be more than enough. Heck, even the stock 8 isn't too bad, even at highway speeds, only that the stock system pulls out bass the higher you turn up the volume, so that sucks. Plus, I plan on doing some deadening in the car anyway, so that will help even more.
Anyway, I'm pretty sure that Five Star will do another video of the head unit install, plus I'll be going to them for the rest of the system as well, so a multi-video "series" when it's all said and done.
As a side note, I had ceramic tint installed, custom fully adjustable Fortune Auto coilovers sitting here waiting to go on, a custom flashed ECU from Russia installed, and will be getting some wheels for it eventually, most likely 18's, maybe 19's.
And just for fun in case you are really really bored, a few pics of the "new" ride.