Here is a picture of it uninstalled from the car. It bolts straight through the fire wall and the floor pan at four points. It is very rigid and well made although I think that because it removes the Standard cross beam from under the Wind deflector it should have a bar half way up the roll bar to improve the structural support.
You do have to remove the soft top to have this fitted or have the roof in the raised position permanently.
(http://www.gt-international.com/MR2ROC/amuse1.jpg)
And here is a picture of it installed, incase you forgot.
(http://www.gt-international.com/MR2ROC/rollbar_004.jpg)