A question about a 69 273

Sounds like you got it goin' on with your project. The 318 intakes should work fine. The difference in the 273/318 and the 340/360 intakes is the port size. Something to watch out for though is the 65 4 barrell intakes had a different bolt hole angle and smaller hole sizes. If you find a used Edelbrock, look for a LD4B which has the smaller 273/318 intake ports and the correct holes and hole angles. There was a Edelbrock Streetmaster 318 which should work also. I thing Offenhauser still makes one. Worth checking out. Welcome to the site. tmm