Unless the frames are already designed for retrofit. Which isn’t implausible.I don’t think so. They will require changes to the intakes.
The intake may not be an issue here. Capture area may be designed for the WS-15, since it’s related to the external geometry of the plane, so any changes may be with the tunnel, or with bleeds, and the WS-10 class engines are the ones getting customized treatment. The other possibility is that the DSI bump simply needs to be reshaped/modified, and most of the engine class cross compatibility is being handled by the bump.
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