Unported head quickness?

1969 Barracuda FB 340 +.060 ...12.5 to 1 TRW, stock rods, X heads with 2.02 installed. MP .590 cam, Holley strip dominator with 750 DP, MP electronic distributor with MSD 6AL, Hooker 1 3/4 Headers,

904 trans with Tranzact Brake, Turbo Action 8 inch Converter flashed to 4800 rpm, 5.13 gears with M/T 14 x 32 slicks. Car weight with Driver 2700 lbs.

10.90 @ 121 at Bakersfield in 1990