Headers won't make the carb useless, you will just need to re-jet it because the mixture will now be too lean- the air in the cylinders will be cleaner so you will need more fuel to make the mixture right. The 1 bbl carb will be a bit restrictive but it will work just fine if you set it up right. You have a rare engine there and I applaud you for not getting rid of it.


Paint & Body Shop moderator
A lone amateur built the Ark. A large group of professionals built the Titanic.