I was wondering if I could swap out my radio to a navigational radio (original), is that possible?

 

No. This has been covered many times

 

Found this in the FAQ section of this forum. It has been done successfully but it is NOT a plug and play swap by any means, requires extensive harness modification. Here's a link, good luck and keep us posted on your progress!!

https://www.clublexus.com/forums/gs-...-retrofit.html

 

Also, why?

Since we're trying to pretend that anyone still likes 20-year-old screen interfaces, let's just bring back GeoCities web pages while we're at it.