My tattered Chilton's Mustang manual says for the '71 302, 210 bhp @ 4600 and 296 lb./ft. of torque @ 2600.
I think they were still using gross figures here, so that would be 15-20% lower if you converted to net that we use now.
Rev
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'66 Coupe, 306, 300 HP, C-4, 13.97 e.t., 100.3 mph
1/4 mi.
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