i searched lookin for ways to do this but didnt find any i thought were worth the time or the money i wanted to invest. i got sum 6 1/2 door speakers for my b-day to replace the old factory ones and then i started to intalled them i noticed the mounts for the 6 1/2 on factory are offset outside of the aftermarket mounting ring. so i went to tractor supply and got sum 22 gauge sheet metal in a small sheet (5 bucks). cut out an outline of the facoty speaker and then the inside of the aftermarket. used the foam padding off the factory speaker to put between the new speaker and plate. screwed speaker 2 plate. screwed plate to facoty mount and i was done. it took a lil while do the guess and check for the first one but the 2nd was easy i just used the first as a stencil.