I have the pocket below the stock head unit, so it looks like the space is large enough. Cougar has a standard double din right? The major concer is if I can plug and play or if Ford(Mercury) changed the wiring harness!?!

1996 Mystique GS V6 MTX - PIAA bulbs, SVT shift knob, Firestone Firehawk tires, EBC Greenstuff front pads, Amsoil oil filter, Centerforce Dual Friction clutch, SVT flywheel, Amsoil synthetic transmission fluid.