I can take some measurements for the speaker template for you .I used what I think was 16 gauge metal that I could barely cut with tin snips and my air nibbler struggled with and ended with a jigsaw with I thought was a metal blade lol.The speakers and hidden antenna are from Amazon .l have not tried any of them yet but the speakers are marine speakers and are water resistant .I think they said they were 4 inch but with the mounting lip they were bigger so if you look at my picture they were sliced down two sides on one side so they are closer together and fit so they point out of the dash grill area of about 8 inches .the bottom of the speaker frame has two holes that lined up with two holes that were already in the bottom of the dash that I used to fasten it to .I will take some template measurements and post them later .The template I made is simular to the one posted by another member on here so credit to his template and his may be better depending on the speakers used .
