Ok, so i picked up a set of Evo 10 rear seats for $100. Couldn't pass the deal up.
For the most part its a straight up bolt on affair. You do not need to do any trimming to the interior of the vehicle like needed to install evo 8 rears.
No pictures of the backs being installed, but you just have to bend the two bolt down bars on the left and right to line up with the OEM bolt holes, the metal bolt down bracket in the middle you have to cut a small section out and bolt it under the seat belt.
For the bottoms its just as easy, there are two tabs on the left and the right of the bottom and need to be bent over or cut off(i bent mine), on the back of the seat there is a rod that sticks up, i cut that off, i then drilled 1 hole at the bottom of each of the OEM seat mounts, bent the evo x mounting points to line up and used a nut and bolt with some large washers to hold it in place.
Sorry i only have pictures of the final product. I do think it fits much better in there and looks better.