Back pain driving Boxster

[Perfectlap]

I don't think its the seats. I dusted off my stock seats from storage this weekend to condition the leather and for a minute I sat in them and realized how well made that seat is.
I thin the problem is how low the seat is to the ground and the jarring from going over changing road conditions on a small amount of rubber. That vibration is traveling up your spine and causes the lower back muscles to fatigue. The last vert in my spine and tailbone are fused from a congenital defect so I'm sensitive to all things that are out of wack or even a slight weight gain.