I installed the Mazdaspeed shift knob, which was a simple screw on. I attempted the IL Motorsports eBrake handle, but failed miserably. It seems it doesn’t work on 2013 models. I also attempted the IL Motorsports pedals. Very nice pedals. The dead and gas pedals needed some holes drilled, which was cake compared to the clutch and brake pedals Those are the slip on type, and after five hours of cursing and sweating, I was only able to install one. They don’t slip on very easily. I’m going to sit on this one for a little bit while I figure something else out.