umm ok let me try this again...I know you have to take it apart get the factory out but after that...I was wondering if there maybe scoshe adapter or what not that would let you just slide the replacement headunit out...maybe held in place by clips or something...so you wouldn't have to remove anything...for example...the Ford has the little tool you stick in the side of the radio to unlock it...then it just slides out...this way it only takes sec to replace a headunit instead of the 10 min to an hour (depending on your expertise) to replace the headunit
I have done a lot of stereo and never seen one made like that for a 4runner. Why would you want to make it easy to pull out anyways? It'll just be easier to steal. My $.02