Ive driven street cars with cages. A legal to 10 seconds cage, if done right, can almost be like having no cage at all. Just takes the right parts and a well thought out install.
My current project will be way faster than 10 seconds. So I had an 8.50 legal setup installed. We are just finishing it up, and while its a bit more intrusive, my installer did a top rate job of keeping it out of the way (as much as possible) as well as making it safe for the speeds planned. Lots of work getting everything to fit together. When you cut the floor out of the car (to channel it over an aftermarket frame) NHRA rules require a bunch more work to make it legal. But the majority of the extra work is under the floor.
There are 3 things about street car cages that can cause problems. First is a crappy design/install that places the tubes in such a way that you are constantly banging some part of your body against them. A well designed cage will minimize this. Second is the cross bar. It can make it impossible to use the rear seat. Alston has some very nice hardware that makes a removeable cross bar possible. Lastly are the door bars. Lots of people use swing outs. I used them. Once. Rattled, PITA to open when in the seat, etc. This time we put removeable door bars in using the same Alston parts. If your not racing, you can leave the cross bar and door bars at home.
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