Quote:

Your carb and exhaust do not need replacing unless they are bad, they will work just fine



That's good to know. Wasn't sure if my 600cfm Edlebrock carb would be enough for the 5.9

And I've heard something about the early 340 exhaust manifolds not matching up correctly to the ports on the magnum heads. Is this false ?

Here is a quote from Magnumswap.com
"Note: There are varying reports as to whether stock car-style manifolds will bolt up to magnum heads. Throughout our testing we have found a mismatch on the exhaust port openings between Magnum heads and the classic 340HP manifolds."