5.7 swap

Hey guys, new to the forum.

just got a 76 dart sport with 318/auto.

my background involved more late 70's - 89 dodge trucks, new to the car scene, although not completely unfamiliar..

i am thinking of putting a 5.7 Hemi with an auto out of a truck into this car ( read on here that the car auto trannies involve alot of senors)

will i have to make mods to the tunnel to accomodate such trans?

i haven't read much with mention regarding a hemi with MDS system being swapped in....is this a pain or such a non-factor it's not getting any mention.

do i only need the factory ECM?

also this car has power steering...and from what i read i would have to change this to drop in the hemi, along with different motor mounts, headers, flexplate, remote oil filter.

am i on the right track here?

thanks