RE: A GLH for 2012
Our high school shop class had a film of what a clutch explosion looks like and that film helped sell a bunch of scattershields, I'm pretty sure.
So in 1971-72-73 it was about $100 for one.
$100 for a vertical gate shifter....
come to think of it, just about every little aftermarket bolt on product seemed to be in that $100 range...which would have been about a weeks' pay for many kids.