Use the Offy 2x1 intake, 2 Holley 1920s and 2 unsilenced air cleaners from a pre-67 slant and it will look like it's a factory option. Offy has a linkage kit to connect the carbs together along with the throttle and kick down. The bonus is doubled carb air flow, which will be around 350cfm, 1920s are 160-180 cfm.
The 67-up air cleaners use a larger 10" filter and the carb spacing is less than 10" so they interfere with each other.