[mongocanfly]

I have a small piece I would like to bond...I don't really want to buy a gun and big tube for this...it will be for one time use...
is the syringe type (eastwood Replacement No Weld Panel Adhesive Item #31087) worth the trouble?
Here is what I have....it's the mount for my overhead radio enclosure...I plan on using screws to hold it where it mounts above the mirror..it's where the mount will contact the roof that im wanting to bond....(or is this a bad idea?)...it's a single thickness roof....or any better suggestions...
Blue area is where I'm wanting to use bond agent...yellow area is where it will be screwed overhead of mirror....since it'll never be removed ,i may bond above mirror(yellow section) with a couple screws as well...
looking at bottomside....