What surround install kit is everyone using to install their stereos into their cars? Been looking around and cant find much!

You don't need a kit, the OEM trim matches perfectly with a standard "double DIN" radio. Or a single DIN radio, with the OEM bin beneath it. Those are the most common and standard radio sizes on the planet.

It you don't have the OEM trim, see the f/s section, I've got a spare surround and the two metal brackets for it about to go away to eBay.