Boxster seats

[Dave Wildrick]

I have a 2001 Boxster. I love the car except for the seats. After about an hour and a half my lower back is killing me. I have no problems with the seats in my two 356C coupes (or my Sienna minivan).
The Boxster seats adjust manually up and down, backward and forward (and the seatback recline is electric).

The real problem is that the seat bottom cannot be tilted up and down, and it stays at a fixed angle that is well above the horizontal plane. This causes your lower back to be dropping into a hole, whether the entire seat is all the way up or down.
I have tried using 2 different kinds of lumbar cushions, both inflatable and noninflatable, without success.

Are there any other seats out there with adjustable seat bottoms that will fit an 01 Boxster? Do full electric OEM Boxster seats have this adjustment? Or are other seats out there that do it?