I guess while I'm on the topic of springs, I'll post the data for steel hood springs also.

barracuda: 24 coils, .215 spring thickness (with paint), 1 3/4 outside diameter, 5 1/8 long (without hooks)

challenger: 22 coils, .240 spring thickness (with paint), 1 15/16 outside diameter, 5 1/4 long (without hooks)

Tav