My 69 Barracuda fastback runs consistent 11.7s at around 115 to 116 mph. Mild 408 W2 ,10.5:1 comp engine with 3000rpm converter and 3.91 gears. Car is all steel and weighs 3300LBS without me in it.
Would i like it to be faster, yes, but it is such a great street car that has been going strong for 8 years now with no issues.
It has done about 4 x 650 mile return trips to a big mopar show here in Australia where most cars that quick or quicker end up getting trailered.
Juat cant bring myself to change anything that is going to make it less streetable, might have to build another one for that.