roll cage help

[sk_stang]

what roll cage is this? where can i get one from, and is there any special modification needed or is it just a bolt on? cant seem to figure out how to post pics but heres the web site of a car with it in, it not a complete vue of the whole roll cage tho, http://classifieds.stangnet.com/showproduct.php?product=40535&cat=10