Yep, the Or-Fab came with Grade 5's but I replaced them with Grade 8's. The windshield brackets did come with the kit, and the main bars that replace the OEM bars are one piece wrap around. The floor mount kit adds strength by adding an additional piece of steel on either side of the main bar at the dash. Your decision on what you want to go with. I have seen a rollover with the same cage I have installed and my friend was in perfect health afterwards.
The cages all have there good and bad, I personally would take any performance tested bolt in cage like rock hard or Or-Fab over the stock bar.