LOL those bars got in my way too. So i got some Image Dynamic speakers and installed them in the oem housing that the 1993 honda prelude i have.

the first stupid thing i did when i tried to fit some diamond speakers in was remove those bars which hold the trunk up. big mistake the trunk slamed so hard after i did that. and the trunk became super heavy. Those bars are to hold the trunk up and make it super light. Dont take them off, its a pain in the ass to put them back in.

the image dynamic speakers i got barely fit but hey they sound great