Speed: 812 mph (Mach 1.08 at sea level)
Ceiling: Above 55,000 feet (16,764 meters)
Maximum Takeoff Weight: 12,093 pounds (5,485 kilograms)
Range: 1,093 miles
Armament: T-38A: none; AT-38B: provisions for practice bomb dispenser
Unit Cost: $756,000

Hm....not much more expensive than a fully-loaded Cirrus, much
cheaper than most VLJ.

Of course, this was back in the 60s...