Topic: Seat padding, especially lumbar support
I'd like to add some lumbar support, but also maybe some additional butt padding, to our Kirkey intermediate road race seat. It's an aluminum seat with a removable cover. I presume any padding would need to be somewhat fire resistant, although I suppose if it were placed under the seat cover this might be less of an issue.
How have other teams increased the padding in their driver's seats? Pictures would be appreciated.