Get your engine mounted in the frontend and mock it up in the car and you will see where everything hits. My rear crossmember (same engine and trans as yours) goes back into the same spot but you will have to cut up the cross bracing and floorpan to make room for the trans to go upward.
Here are some pics as I cut up a done car to go Hemi! My work isn't the neatest but it worked out in the end.