I Have a mild build on my 340 '68 Barracuda fastback with Summit Racing intake, 650 cfm double pumper, Pro Comp Heads, roller rockers/lifters, Speed Daddy headers with 1.5 inch tubes,. It ran 13.58 in the 1/4 mile with 3.55 gears. I had it Dyno'ed @318 HP to the wheels and roughly 300 ft-lbs of...