Yes, Sparco EVO but even with the RSR base, Rob had to modify it a fair bit to get it lower and wider...not sure he'd be rapt doing another! Though saying that my EVO seat is a wider variety (which you may not need), so the modifications could be less if you got a narrower one. But if you're reasonably happy with the standard seat, maybe just try the low rails, which would still give KV the option of raising the seat for her requirements.....nothing ventured...