Does the exhaust manifold off from the 'integrated' intake head mount onto an older head? If yes, then are there any modifications needed?

As always, thanks for any help in advance.

NO, the integral header comes off the bottom of the head/manifold instead of the side like the old head.If emission requirements will let you, you can replace the integral head with an old head.

Larry

Thanks Larry. I didn't think it did, but I have access to one and the dual exhaust option was tempting (if it would work).

THE OLD STYLE HEAD IS PRONE TO LEAK SO KEEP THAT IN MIND.