Has anyone actually installed the 'extend my seat' bracket in a 986?

[bmsamson]

At 6'4, I could use the legroom, especially as mine's a manual. The bracket seems a nice solution, but I can't see how it can really work, since the seat with the original mounting runs back to the wall already (not to mention the issue of the roll-bar). Is anyone actually using this, can report on how it's working? Inquiring minds want to know.