throughout the years my father owned some old 12" crunch woofers on an unknown cheap 1000w amp. he built a small blow through half walled in his s10 when he was a teenager and kept it until I was about 5. I still remember thinking how loud it was jamming to some master of puppets headed to gmas. good times..
over the years he got some Rockford woofers and an old 1500w power amp and put it in his z. that was loud but I think officially the Rockford soundlab did it for me. that's when I realized bass could hurt you and literally pull the breath out of your lungs. I wish I had a video of me when the bass dropped haha.
went from a 143ish (ear/memory meter) to a 160.