What sensors are needed to use the MSD 6Hemi controller with a 32t crank 6.1L ? I've been told I'd need two 5.7 sensors and then one from the 4.7

You can use the 6.1 cam, crank, and map sensors. The cam and crank are same as 5.7. The map sensors are different between the two in that how they attach to the intake. The 5.7 is a snap in and twist. The 6.1 uses two screws to attach to the aluminum manifold. The 6.1 MAP is the one you want.