The 6.4 apache cam will bolt right in and is much bigger and only $68 from the dealer. As new as that motor is you should not even need gaskets just a dab of sealant on the corners of the timing cover.
Something to consider, because I need to replace the timing cover and water pump anyway. The cover has mounts for two alternators, an unneeded EGR cooler feed/return pipe, and in this case, a serpentine belt driven PTO which I'm hoping to sell. I'm planning on switching over to another VVT cover from a 392, along with the water pump.
As for the 58 tooth crank wheel...my last discussion with MSD gave me the impression that an update to their Hemi 6 will include a 58 tooth crank sensor. They have multiple options for LS platforms, so I'd HOPE they see the value in this as well. Worst case, I swap wheels.
