It took me a lot more money and parts to get into the 12s than most on here, but I will share anyway.
69 Super Bee 3950lbs (with me and a passenger on my best run) 383 - 11:1 3.91 3500 converter 232/242 solid cam RPM intake + 750DP Edelbrock Heads 1 7/8 headers
Ran 12.7 @ 109 on 28" ET Streets the only time I've been to the track with this combo.