Many, many moons ago. I had a .509 stick in a 400 (no strokers in those days) in a 3200# Duster. On Dunlop qualifers and with a 10" B&M converter and 3.91s, Holley SD intake and 750 Holley, it went 13.30's through those "killer" turbo muffs...

I swapped in 4.30's and a tightened up J converter and went 12.70's. Added a glass 6-bbl hood sealed up and slicks and went 12.40's. Uncorked it went 12-teens.

Sprayed in with a homemade nitrous deal and went 11.50's...just sprayed one too many times...the cast slugs weren't up the task. Man, those were fun days!