If memory serves, the 92 Integra has 2 8mm Phillips bolt/screws near the back of the deck attached to a metal bracket. If you sprawl yourself on either doorsill you should be able to take a fluorescant shoplight up under and see 'em.
For the removal you'll probably need to get something called a "Skewdriver". It come in a kit like this
The nifty part is that the head and stock of the tool separate from the handle.
You don't remove any trim off the front. Once you get those 2 bolt/screws out, the radio should just slide out. There may or may not be a "pocket" attached to your stock deck. The mounting kit will provide for this.
Metra Online
Then you take the mounting sleeve from your aftermarket deck and slide it in and bend the tabs to secure it. A flatblade screwdriver works great for this. "It's just a flick of the wrist"
Then wire up the deck harness to the car harness adapter, and splickety-splack you'lll have tunes. Now, provided that you use crimp connectors and all your wires on either harness are the same length.... then your wiring job should end up looking like something you should have paid for. Then use some zap straps/zip ties ...the 8" thin ones work best and put about 5 of them on to your harnessing. one in the center around all the connectors and 2 on either side of that.
When you plaug the car end in.... don't jam it and bend the pins. If you don, it's a absolute bitch to straighten them out the right way.
Once everything's hooked up, thurn the key to the accessory position and check all the functions out.
Does the power antenna come on with the radio?
If your deck has separate leads for amp and antenna turn-on, then the power antenna, if working properly and present should go down when you switch over from radio to CD.
Check all your speakers. Fade it to the back and balance shift from left to right. Then fade all the way forward and do the same. test the max volume that still sounds good to you without distorting.
(Chances are, with the increased power output of the deck, you should replace any stock speakers)
Then turn the key off. Wait a "10 Misissippi" count and turn it back on. (the ACC key pos.) Yous should have all your settings the same.
I'm sure that if you're using a wire harness adapter and Dash Kit. You shouldn't have any problems.
Cheers. Email me if you have problems
dbadct@hotmail.com