Best carburetor and intake manifold for a 273?

I love the 273, I have a 65 4bbl. With a 66 you’re better off as the 64-65 have a different bolt pattern. I put later 318 heads on mine with a LD4B from eBay with a Carter 625.
The bolt-ons from LA blocks swap with the exception of 360 converters, cranks and the port size changes