I'm new here and the main reason I signed up was to get help with my trunk. I have an S14 and I can't get the trunk open

When I bought the car the girl didn't have a key that would open the trunk and I wasn't too worried about it but now the lever next to the driver's seat will not work. I've heard that you can climb into the trunk and open it from inside but my husband skrewed a board in place right in the opening between the trunk and seat to mount my amps but now I cannot get to the trunk from the inside. We really need to get into the trunk

I was thinking that we could knock out the lock and open it then replace the lock and cable system. Is this the only way or are there any other ideas out there?