This particular Mustang is being built to meet SFI standard 25.3B, which is for full-bodied cars—either unibody or tube frame—looking to run under 7.50 seconds (but no faster than 6.50).

In reality, there's nothing wrong with square tubing for seat mounts and, especially in this case, the 1.25-inch, .0120-wall square tubing made it a lot easier to build my bucket mounts.

This weld-in roll cage from Poison Spyder Customs wilil protect your noggin from all that rough 'wheeling! Find out more inside 4Wheel & Off-Road Magazine.

Jeff Gordon and Dale Earnhardt were among 16 drivers held out of Coca-Cola 600 practice Thursday after NASCAR inspectors found inferior tubing in their cars' roll cages.