Too much? Wont fit? Too big?

Really if you've got a /6 in there now going to a BB doesn't require that much more than a small block. Most of the stuff you need to change would need to change for a small block too.
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