As Paul says it suits later HQ, early LH plus early HJ manual 308.

The blue motor carbs are better for 2 x reasons but no compelling reason to change yours:

1. Primary metering rods are adjustable without pulling the car apart.
2. If you change valley cover to Edelbrock or KC the choke mech is on the carby; early carbs have it on the manifold (divorced choke).