What transmission is in Dodge Maxi-vans?

['74 Sport]

My son is planning on retrieving a 360 V8 from one of his
grandparents' extra work vans to swap into his new project,
a '74 Gold Duster. What type of automatic transmission
would be in a mid-80s Maxi-van, and will it fit in his Duster?

Jerry

 

[340mopar]

It will be a 727.


Chuck

 

[375inStroke]

Super absorbent.