To install a BBF in an early car, you need to extend the wheelbase between the cowl and the radiator by 12-15 inches so you can run the OEM cooling components and enjoy bulletproof cooling results.

I used a 117 inch wheelbase on my 27 Ford roadster, 429/C6, with all the additional length between the cowl and the radiator. Worked out well. In my opinion, it makes the car look better as well. I have always thought that the early cars are too short from the cowl forward.