It is a street car. Yes, it has Indy heads. My Edelbrock headed 408 ran 6.57 @ 104 with a flat solid on pump 93 at 3240# with Edelbrock heads. It got driven on the street a lot.
I love 340’s and have one, it ran 7.24 @ 94 and 11.60 @ 116 with a flat hydraulic cam and Edelbrock heads, 3240# on pump 93.
You have small block stroker experience?