unless you've got the equipment and alot of patiants i'd advise buying a pre built one, it's so much easier, but i like a challange 
we didn't have any drawings just the ideas i had in my head and how i wanted it to look, the rear hoop and stays are easy as there mostly straight pieces of tube
the A pillar bars were the real headache as they bend about 4 times and kink aswell, a right bitch to make in a pipe bender and even harder to mirror as we found out
the cage is welded to 3mm plate and this in turn is welded to the floor at the front, by the B pillars and the rear suspension housing
i've got some more pics that i'll post up when i get a chance
we didn't have any drawings just the ideas i had in my head and how i wanted it to look, the rear hoop and stays are easy as there mostly straight pieces of tube
the A pillar bars were the real headache as they bend about 4 times and kink aswell, a right bitch to make in a pipe bender and even harder to mirror as we found out
the cage is welded to 3mm plate and this in turn is welded to the floor at the front, by the B pillars and the rear suspension housing
i've got some more pics that i'll post up when i get a chance