318 swap

Hello all,

I'm a new mopar owner with some engine experience, but tons of questions...

I currently purchased a 318 v8 from a 1977 dodge van (sportsman I believe)
and I am thinking of putting it in my 1970 dart slant 6

all parts are there.. would it be a direct mount up for the trans?

Is it even possible? is the 318 from 1977 the same basic engine as the 1970 318?

I have done some research, and can't find a lot of information about the trans...
Any and all help is greatly appreciated and I look forward to posting pics of her restoration :D

(reason of switch due to dime size hole in block)