Only for the '66+ heads. The intake bolts don't match on the earlier heads. For some crazy reason Mopar changed things, and after a short 2 year stint on one design, decided to "improve" it. The '64-'65 273 heads had different intake bolt patterns. Incidentally, the '66+ is what was used on all LA 318, 340, and 360 engines.How about SP2P? Will one of those work on 273 heads?
With the small intake ports of the 302 318 heads you want to use, the Edelbrock SP2P intake is an excellent choice. At least the port sizes match.