It may need a little triming on the sides and mounting brakets/plate.
If the unit is in the dash you'll have to remove the dash
carefully the 180B has 2 really small screws behind heater control the face plate.
If in the console remove it,turn it over you'll see 2 or 4 screws.
Take note of the wiring where it goes to you might be able to use it to take Ignition feed from and hook up speakers as I did.
_________________
Regards
DEZA
OzDat WA President
76 180B Wagon FJ20e, LT8 -daily
83 DR30RS FJ20et, GT35/40, 45mm Turbo Smart waste gate, 35mm Sard BOV, 356rwhp @ 19psi.
GO HARD or GO HOME, GO SIDEWAYS or GO SQUARE