AP-29 or AP-30   $284.15

with 2 sets gaskets $308.15

So many pickups were blessed with the Modified engine.
When the time finallly comes to rebuild or redo, why not
improve? Whether making the 2V breathe better or
going all out with the 4V, the Cleveland manifolds will
give you the results you desire. The 351/400M engine
has a very short distributor.  If you wish, you may use
a 351W distributor that has a taller housing and install
your Modified gear.  If a clearance problem arises you
can use your distributor with a PME Distributor Kit.

See Distributor Kit