I brought this question up in a thread a long time ago but it was never answered.
http://forum.ovr-scca.org/index.php?topic=145.msg2103#msg2103The "Observer's Stand" issue I just got has an article on PDX preparation that mentions equivalent restraints being required for driver and passenger, which I knew. It continues in the same paragraph to say that the seat design
should be the same. So...is that a requirement or a suggestion? I haven't seen any supps that explicitly state one way or another. I'd email Ken, who authored the article, but don't have his address. Hopefully a safety or tech chief can answer definitively.