This came out in December Dan, its a Coyote 351 but internal/external specs haven't been released yet. I think they bored this over some...
This is what were looking at as far as bore and stroke and also another 5.7 option.
5.0L Stock
Bore – 3.63in (92.2mm)
Stroke – 3.65in (92.7mm)
Displacement – 302 cu in, 4.951L
5.7L (using 5.4L’s stroke and 5.0L’s bore)
Bore – 3.63in (92.2mm)
Stroke – 4.165in (105.8mm)
Disp. – 345 cu in, 5.651L
5.8 with a stroke 4.24in (107.7mm).
Bore – 3.63in (92.2mm)
Stroke – 4.24in (107.7mm)
Disp – 351 cu in, 5.752L
The deck height difference from a 5.0 using a 4.6 DH and a 5.0 using a 5.4 DH is about 1.1".. Not really a big deal seeing that is would save about 30lbs, have TiVCT and ready for DI.