I just bought a 1990 honda Accord Lx and im trying to replace my stock radio with this clarion reciever that i just bought but i cannot seem to remove my stock radio> I would like to know what tools would i need to remove it

 

Get an 8mm swivel socket and a medium 1/4 in extension and ratchet. Lay on your back on the passenger side and look behind the dash in the area of the radio. You will see two 8mm bolts in the back of it, just loosen those and the radio will slide out of the front of the dashboard, just release the clip and the antenna.
When you install your new HU be sure to install the sleeve correctly so it doesn't squeak or rattle.
Good luck and welcome to HT

 

This has been covered ALOT of times.... Do a search first.