So if you have a lifted cruiser and little kids you know the struggle of them trying to climb in the back. I also wanted to upgrade the speakers in the rear doors. I have a 3D printer and knew this could be solved. Since my design skills are still in the tinkercad levels I had a buddy at work design this 20mm speaker spacer with integrated handle. I had two sets of holes in the spacer. One set to mount the spacer to the door and another set to mount speaker to the spacer. I used riv nuts in the door to make sure it was nice and secure for the kids. I used PETG filament and 40% infill and it is plenty strong for the kiddos. Printer is an Ender 3
here is the STL for anyone that is going to ask: Speaker Spacer W/ Handle
here is the STL for anyone that is going to ask: Speaker Spacer W/ Handle