12's from a 340 naturally aspirated.

I have a .030 340 built in 1981 with stock cast iron x heads. Stock intake manifold. MP. 509 292 hydraulic flat tappet cam. Car is a bracket car. 4.30 rear gear 31 inch tall 13 inch wide tires with a unknown stall converter I estimate around 3000. Ithe has run mid 12s for 30+ years with a best et of 11.82. My current trap speed is 106 to 107