'76 400 in a '73 duster

I had a similar duster .
If you look at my pics it's in there .
It had 906 heads forgot cam 440 stock magnum ?
Been too long edelbrock intake
750 holley dual exhaust and 3:91
Sure grip .
It was bad ***!!
I never took it to the track ?
It was cobbled together by the shop teacher at Garfield high school . With dual quads and bigger cam he said 11:99 ?
I'm guessing it was a low to mid 13 car ?