I'm looking at a catalog from Hot Rod and Custom Supply (Used to be right here in Cape Coral, moved recently to Michigan)

They have a kit for $ 154 that gives you your motor mounts (bolt in) and instructions how to modify the crossmember to use a C-4 trans. The phone number is 1-800-741-4687 or www.rodncustom.com.

I think this makes a very easy, nice swap, and you pick up power and lose some weight too.

Hope this helps. Don