what is this...?

[Jarrett]

i dont remember seeing this in my 87 gt

 

[IApony]

Not sure but it looks like the factory amp for the stereo.

 

[ID89GT]

Id agree with the factory amp, or possibly an aftermarket alarm module or something, hard to see the picture clearly to give a definite answer.

 

[87GT Drop Top]

It's definitely the factory amp for the stereo.

 

[Lawbreaker5.0]

My amp was under the passenger seat in my 93. What year is the car?

 

[cjrpony]

Factory amp