It would depend on the type of vehicle and the size of the motor.
On every vehicle there are two manifolds. An intake manifold and a exhaust manifold. The intake supplies fuel and air to the cylinders. The exhaust collects exhaust from those same cylinders.
Since they are really the same thing, there is no answer. An exhaust manifold is a header and vice/versa.The common cast iron 'exhaust manifolds' are quiet, last forever, and cheap to produce. The headers you refer to are more expensive, short-lived and can be very pricey. But the first guy who bolted a pipe on the exhaust post of his single cylinder motor to keep from getting burned by the exhaust created the first header. He also created the first exhaust manifold. Take your pick.
No a 1972 Chevy pickup is not the same model as a 1973 Chevy pickup. I believe it goes from 1967-1972, 1973-1980, 1981-1987. Doors will work from 1973-1976, 1977-1987. You would need to find 1972 doors as they are the only ones taht will fit a 1972. 1967-1971 are the same but there is something different about 1972 doors.
No.
Block and heads are the same. Manifolds are different.Block and heads are the same. Manifolds are different.
Yes you can it is the same engine. Just be sure to use the truck exhaust manifolds.
more than likely as they are the same body.
NOTHING, Just as long as there close to the same year. You may need to just switch some sensers and exhaust manifolds, But more then likey the sensers are the same.
The engine block and heads are the same. The intake and exhaust manifolds are different. The transmissions do not interchange due to different control systems.
Not normally.
Yes, it is the exact same enging block and heads. Upper intak would need to be changed and possibly the exhaust manifolds.
if it is the same size. 3.1 for 3.1 or 2.2 for 2.2 go ahed and do it. you may need to switch intake or exhaust manifolds so all the wires and such line up.