Its shown in the air cleaner description. The bolts are 6B-1557 3/8 nc x 7 1/2" long, the tubes are discontinued but can be made.
It may also be shown on the page of "Manifolds"
It isn't shown on the manifold page but it is shown the air cleaner page.
The tube is a different desing than mine.![]()
Ok thats an early manifold, that is probably an early parts book too, need to have a later book. What is your tractor number?