Anyone else use a crash box sometime?

Yeah, back in the day aka the good ole days. Back then I was running Gen ll hemi and the 833 with gear ratios running from 4.56 to 5.13. Doug Nash was producing the heavy lug gears with two of every three splines of slider taken out. It worked well. This was a car dedicated to drag racing so there was no worry about what it would do on the street. They were "good old days!"