I ran 10.9s with a best of 10.91 in a 3100 lb. duster, 9.73 lowdeck 451, bone stock 906s, XE284H cam, M1 single, 750dp, 1.7/8 headers, MSD ignition, 9.5" 4400 stall, 4.11 gears, 1.5s on the 60fts. & over 120 shifting at 5600 rpm, so it doesn't take much head to get into the 10s with an BB a body, just a well thought out combo.