I don't have first hand experience with that specific Seat but my other three Mustang seat experiences say it will raise you slightly. I had a vintage wide on my Suzuki Boulevard and it was about a 1" raise but not change in front/back. The touring seats are also stiff and wide which can make it seem even taller when putting your feet down.
I've got a square back on my Switchback and my friend but a tripper on his softail slim. Both me and my friend felt not change in reach just the slight upward push. Hope it helps until someone can post info specific to your seat.
I've got a square back on my Switchback and my friend but a tripper on his softail slim. Both me and my friend felt not change in reach just the slight upward push. Hope it helps until someone can post info specific to your seat.