The cage is nothing more than a few bars,,it wont stop anything from puncturing the tank in an accident .
If you get hit hard enough to gte to the gas tank that cage wil not help AT ALL.
There is also no cage on the passenger side where you think it would do the most good. My Lotus had the tank right behind the seats between me and the turbocharged engine ,,no cage just a layer of fibergalss.
Keep in mind the aussies never had this crap till we started buying their cars. This is soley an american "ill sue you" "I need the goverment to take care of me" thing.. they are kinda pissed at us for screwing up their cars.
I threw it out first day i had the car. i also removed spoiler,spare,jacks,resonators,tiretool,Run a BMR front skid plate and run with 1/4 tank at track. Over 200lbs of weight savings if you include the gas .. thats the same as adding 20hp.. Most people pay $400-$1000 for tuners or headers to add 20hp...