First of all, welcome to the Forum, Steve (nice name

).
You're right, dash space is limited on the FJ for CBs, ham radios, scanners, etc. So, you might want to consider something like a "pop up" mount for your scanner inside of the driver's side glove box (on top of the dash). Several members have installed their CBs, GPS's and ScanGauges in there.
Or perhaps what I did with my CB . . . . mounted either in or on the back of the center console.
