Help Identify This 340

I'm going to go way out on a limb and say that someone was either misinformed or simply lied. With everything except the intake looking like OEM, there is very little chance of that engine running high 10's or low 11's, even if the car was very light. At least not in the 1/4 mile.

You may be able to get a clue on the pistons by looking at the undersides. Cast/forged are very different and forged may have a brand name on them.