I would like to remove the package tray on a 1970 Challenger to be able to install some speakers underneath the tray. I have the proper package tray, but want the screws to be going down to the trunk so they don't show on the package tray itself ( I think this is the stock style?).

My question is -- how do these package trays come out? Mine is still in very good shape so I don't want to damage it. Are they glued in or ?? Is it possible to get these out without damaging them?

Does the backseat back need to come out for this?

Thanks a lot!
--Stan