Upgraded seat for older Outback Mirage

First time caller - long time listener.

I've scrolled through several posts on this so sorry if it's been beat to death. But I have an older Outback Mirage and wan to upgrade away from the stock seat which is horrible. I've seen several modifications using Jackson seats (Elite, 2.0, 3.0, etc..) but it seems they've moved away from these older models that may have fit and now do not make anything suitable. Even if it takes some modifications to the kayak itself, or the seat is there anything out there that wil work?

Thanks in advance. Please highlight previous forum discussions if this topic comes up frequently.