Folks, please stop talks about why YF-23 lost, what a great AF fighter it would be and what a great Navy fighter it could be - I'm pretty sceptic about later estimate.
Remarks to Mato -
a). In a plan view, all intake edge lines are straight, no these curved outer lips.
b). F-23A would have the same nozzles with top covergent/divergent flaps, as YF-, just trenches' tiles would be changed in favor of more light, flexible insulation pattern, and configuration of serrated boattail in planview would be changed to improve weight, IR and stealth characteristics (later shown right).