I'm not sure at which stage of installation you're experiencing issues.
I found difficulty getting the catches on top of the seat back to engage, however perseverance finally won out. The most exasperating issue was the size of the fasteners which secure the bottom of the seat back to the floor - a set of torx bits have sizes of 55, 60, & 65, however, the fasteners in my TR are something like 57. (don't quote me on these sizes, but you get the idea - another tool acquiring trip to a special tool store).
I found the seat bottom to be about the same hazzle as any other GM vehicle. Slide the back of the seat bottom as far back under the seat back as you can & then push the bottom edge back hard enough to get it to engage the hooks on the floor.