Definitely give Ross at Quicktime a call. Last time I checked, the late model hemi specific bell housing will have the starter location on the passenger side, so you may need to use their small block bell housing (extra bolt hole on top). We're using a small block bell since the late model HEMI bells weren't available.
We're waiting on a new bell housing design from Quicktime for the late model HEMI which will adapt a GM automatic (4L60e/4L65e) for another project in the shop. Manumatic computer controlled with engine braking and Twist Machine Paddle shifter should do the trick. My customer didn't want to go the Kiesler route...
Nice work on the TR6060 btw!