when people say bolt in its vague, because most have to have the brackets welded it for it to be bolted in,
i suppose if you can get one the old rockingham rage would be the best, and cheapest, i wouldnt get a show cage, somethimes they do more harm than good
my mate has just crashed his saxo and he had a cage in it and trust me it made me think he was very very lucky indeed, and without i dont think i would have been the same out come!