Buyer beware with a cage kit purchased off the internet. I'd be leery of anyone who sells NHRA certified 10 point cages if you plan to use it for a road course. The NHRA rules are sometimes significantly different than those used for road racing bodies. Not that there is anything wrong with NHRA rules, they just are different and if you planned to show at a road racing event you could find yourself with a cage that won't be approved.
One of my favorite shops for cages (in addition to BBB) is Hanksville Hotrods in Highlands Ranch. They are becoming experts at cutting internet cage kits and "inexpensive u-weld" out of cars and re-caging the car with a custom

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