Thank you. The cab has 6 points where it connects to the tractor. Two bolts go through the existing holes in the rear fenders and don't do much of anything. There are two angle clips that take the weight of the rear and transfer it to the ROPS, with 2 socket head screws to keep them in position. On the front, the steel for the joystick seemed like it was made for the support, so I used that on the right side and made a mirror image bracket for the left side (shown in first picture below).
Since the sides of the cab are outboard of the fenders, the floor is enlarged on both sides with steel tube trapezoid-shaped sections. Flooring is made from a cow mat. The cab was ready for the snow that never came the winter before last.
It was removed for Summer 2013, but has been on continuously since Fall 2013. Doors were lifted off for this past Summer, and reinstalled this afternoon. The flexible material below the windshield in the pics below was replaced with Lexan recently.
Here's a link to a long-winded description of the build:
http://www.tractorbynet.com/forums/build-yourself/263920-diy-cab-finally-decided-time.html