Here's an interesting article I found on the Coyote vs LS-3, for those of us who are not race-engine builders.
To me it would seem the Coyote will be a more expensive thing to maintain and possibly might not have the same reliability as the LS-3 due to more moving parts. However, it would be good to hear both down the back straight of somewhere like Taupo or Pukekohe, as I would think the Ford will need to run higher revs than the Chev due to slightly lower torque.
Which would be nice to hear the two sound different at full song, gives a bit of differentiation that even the Supercars don't really have these days.