Interest in Roll Bar/Cage Kits?

Here's what I came up with after a few quick dimensions off of the Valiant. Obviously, it could be made as simple, or as intricate as one may want. This model shows the a-pillar tubes running through the dash...I understand some people do not want to cut their dashboard up, so another version could easily be available that stays in front of the dash, yet gives as much leg room as possible.
Door bars, tubes through the firewall, roof diagonals, bars behind seat/harness bar etc....all can be added easily.
Thoughts? Opinions? Just an FYI...in order for a 6 point roll "bar" to be NHRA legal, the material needs to be 1.75" tubing. If upgraded to an 8-point(usually certified to 8.50), the material can be 1.625" tubing. Looking forward to input and opinions. Let me know.
Thanks!