I just finished mounting these in http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1
Great speakers, especially for $80. I didn't hook up an amp and you can hear them over the engine no problem. They're also marine grade. They are called wake-tower speakers and you can buy some really nice ones if you want to.
Clamped right onto the roll cage and the soft top still fits over everything just a little tighter. Got a diy gasket kit from the plumbing section to put in between clamp and the roll cage to make sure it fits.
Solid sound for roughly $90