That system won't install in a vintage vehicle, unless you completely update to modern electronics. Also, it only limits top speed, which wouldn't stop the lad from romping the lower gears. I was a teen once. Anything which would limit the uncontrolled application of throttle is an improvement. I suppose I do see how it could be a safety issue for the engine to cut off ( and back on after RPM reduced ) but the warning light plus a timer should make it a non issue. Add a second relay which would latch in and a tattletale light, and the lad would be guaranteed to drive it gentle.