Guys,
The 89.00 seat was available for a time, but not on their web site. Don't know if they have any more or not....you will have to call them.
Yes the seat is flatter and wider in the rear to stop the sliding forward on your junk.
The Sargent website has detailed instructions on how to mark your seat for level etc. I had them dish it out, which is one of the options, using their own foam, add the red stitches, three color flag, nothing done to the passenger seat. They actually sent me the fabric samples by mail to choose from after 1 phone call, so I would know exactly what it would look like.
Once they receive the seat, they call you if there are ANY questions.
I have one of their seats on my ST1300 and it is great......they are firmer than the stock Norge seat, but not nearly as firm as a Corbin.
Any more questions, feel free to send me a message.
Tim