so you talking about a 3rd gen hemi swap got me looking around this morning. (Our server got fried in the power outage surges yesterday, so no workie for me today) I cant find anyone that has used a push button trans behind the hemi. It's no different than a 727 and will work. Just no one that I can find has done one. I think its because most guys ditch the pushbutton trans and the ones keeping it are trying to stay original or are building clones.