radio straps do wonders bro look into those that should give you some ideas lol

you can pick those up at a local car stereo shop they have tons of them and you can get them for cheap !
basically its a thin aluminum straight peice wit a bunch of holes already done which come with new car radios in the box installers never use them because the new cars dont need them so the installers toss them to the side and use them if a custom bracket needs to be made for other stereo stuff so they always have tons of them laying around .....probably charge you like 1-2 bucks each and your good to go bro.
I was an installer so trust me WONDERS those straps can do for you !