Doing it right -need some advice

340 is known for torque. These were high rpm motors, torque like stroke.
Strokers are very popular because of how cheap they are to build today.
How much was the 340 over bored ? Crank undersize ?
You may want to keep the 340 as-is and build another motor from a 360/5.9

Whoops forgot that part. 340 was bored out .040 the crank was undercut, but I can't remember how much. To be clear, I don't mind if it can high rev, I just don't want to have to be in the 5k plus range before the motor wakes up. Because it's a street car.

I don't really want to build another motor.