I got the VLine 2 to bring my infotainment system bang upto date without having to change headunit. The VLine lives in the glovebox and I gotta say it is not 100% reliable at times but has everything you could want and is future proof. Yes £500 is a lot but like I said options (apps ) are almost unlimited, YouTube, IPlayer, Netflix, etc. And the dash stays stock.
have you seen these threads? Lots of pics.
VLine 2
https://www.lexusownersclub.co.uk/forum/topic/116763-vline-vl2-install/
VLine Lite
https://www.lexusownersclub.co.uk/forum/topic/120439-grom-vline-lite-installation/