CD Changer on Console

[4RUNNER_RULES]

For those with CD changer on console what is the dimension (LxWxH) of the changer? Do you know if it compatible with any aftermarket CD magazines? Was wondering if it is a Pioneer/Sony/Alpine. I plan to install a CD changer on console using a Toyota mounting bracket (08695-35801), if I find what aftermarket model it is. Lot better installing on console instead of Under Passenger seat.
Toyota CD changer goes for $400+
I have a non-JBL OEM HU and planning to replace it with Scion HU with PIE interface to plug an aftermarket CD changer.

THANKS!