Check out the link below from my build thread if you need additional pictures. As Redfire mentioned above, the floor will not clear the dash if you install it through the windshield. Since you have it on jackstands, just install it from underneath the car. My car was on a cart and the floor could only be installed through the windshield opening.
It's a really straight forward install and the floor fits really nice. What kind of shape are your toe boards in?
https://lateral-g.net/forums/show...t=19253&page=3