That isn't how they are going to stay. I am having room issues trying to get everything to fit in the trunk. My idea is to put them on the floor behind the front seat. With the caps on the ends they fit in there like a glove. I will see about having plexi glass covers made so they don't get scratched up. I got the idea from the Kenwood Looney Cruiser it is on the Kenwood web site.
