What are stock 360 exhaust manifolds?

yup you are probably right, the engine (from hearing the story from my granparents) was out of some truck that was suppose to be suped up for racing, then was bought to be used in one of their Dodge Maxi-vans. If these are truck manifolds then would these still be able to fit in my duster? If not what do the car manifolds look like? Thanks

Aaron