[BRAN]

I did not glue my Infinity 4" Speakers onto the old holders...4" is just a bit too small in diameter to offer enough space to glue it properly. I used 4 damping foam pieces, crimped the 4 metal holding brakets of the speakers, cut little openings into the frames sidewall, so the speaker will sit tight in spot. Additionally...the holding frame will be screwed to the Speaker dash Frame, so the Speaker's metal frame will be sandwinched between the Speaker dash frame and the old holder framing. I might have a photo somewhere, difficult to describe...lol.

If you want to use glue, no worries of future replacements...a dremel can easily cut through any glue without braking the frame.