Too much? Wont fit? Too big?

Oh really? It just seemed like such a good deal for motor and trans, course no idea what trans it is, id assume a truck trans of some type. Some people have said k member needs swapped out and some say it works, how would you know if it does or doesnt need switched? And id assume itd be best to upgrade the rear end and front suspension
Just found an informative page about swaps finally. www.moparts.org/Tech/tech/pages/big-block-dart.htm