Crash boxes were a joy for one reason only... Once you got the technique right and could double de-clutch with finesse, it looked really impressive to your passenger(s) to drop down into first with your feet in a blur and your hand stirring the gear lever like you were mixing a pudding! A casual shrug of the shoulders and a smug smile to brush aside their praise at your driving skills and the night was guaranteed to be a good 'un!
Ever pushed a Hillman Imp hard? That'd lift its front wheel like it was waving at the pedestrians! Trouble was, you'd then lost half the front-end grip and went into "Oh god I've reached full lock already!" understeer!
And my Mini lifted its rear wheel like a dog having a pee!
I hope your GD got a decent price! So many items I used to have that I sold for next to nothing (extreme monetary emergencies usually). A complete set of Beatles LPs & 45s (you know, the vinyl discs that you played by running a small diamond stylus along a bumpy groove cut into its surface), in mint condition, all bought on the day of release - £72. I found out later most were valued at around £200
each.