Need Help Putting In Replacement Head Unit

[92ES300]

I just bought a Head UNit from a 93 ES, and I was wondering if anyone could tell me how I should replace the old.

Is there a site where I can go to find directions?

Is there anything I should be careful of?

Anything else I should know when replacing the Head Unit?

[SKperformance]

pull the vent out above the a/c

2 screws behind it

another 2 undr the radio hidden under plasctic panel to be poped off

has a whole metal bracket holding chasis of a/c and radio together to seperate the 2