remove dash to replace aftermarket stereo?

[brother rat]

1994 single cab.
Already has a pioneer afermarket head unit, that I am replacing with another Pioneer unit.
I'm not have any luck with the removal tools. Any trick to it?
Or do I need to tear apart the dash? If so, what is the most efficient way to get to where I'm able to remove the old unit?
Thanks!

 

[tinman_72]

It should slide right out with the tool that is supplied with Pioneer units without removing any dash pieces other than the bezel that comes with the radio.