No need. The speakers come out the top of the dash.
with a sledgehammer.
Drivers side, under the dash.
under dash drivers left knee
Drivers sid, below the dash. You have to get on your knees on the ground to get under there.
You have to remove the entire dash panel that the speaker grills are located on. Just pry the entire cover off from either the drivers side or passenger side. Shouldn't take too much work. I have the same car and replaced my speakers also. The speaker grills do not come off of the dash cover.
The 1968 corvette fuse panel is under the drivers lower left side of the dash .
Under the dash board on the left (drivers side) on the firewall>
Should be under the dash on the drivers side just left of the steering column.
The fuse box in the 1977 corvette is on the outside wall under the dash on the drivers side - about as far up in the corner as they could put it.
You have to remove the whole dashboard and then the speaker should be exposed, then just remove it.
First thing to do is when ur in the driver seat, u should see two screws that's around the speedometer gauge of the dash! Remove the screws, then u need to remove the glove compartment! Then u'll need a flashlight for this! use the flashlight to look for a 9/32 screw that's screwed into the dash, remove that screw, then CAREFULLY, pull up from the drivers side on the dash all the way to the passenger side to remove it! Then u have access to the speakers! Good Luck!
Remove the two screws that you can see in the indentation on the top of the dash. Then remove two screws under the lip of the dash. It will take a good pull but it will come off.