Um, I'm not sure that's legal.
no, I'm 100% certain that's not legal.
Your downtubes must end at the pad, not at the bar.
The inner X braces, not sure what size tubing you used, but if it's smaller than minimum tubing size/thickness, you're screwed there too.. Even though the tubes aren't required, if you have a tube, it must meet minimum tubing sizes for your car's weight
Finally, you don't have the required diagonal running from drivers left at the main hoop down to the drivers right..
Here's my cage:
Chris nailed the rules pretty well, another resource I'd point you to: