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What do you plan on doing with the knuckles?
IIRC spline count won't match the Capri axles. That'd take some pretty serious modifications to overcome. The balljoint locations also offer some interesting camber hurdles. Im not sure how much if affects caster
Agreed...no advantage at all and more trouble likely causing bump steer with the different geometry.. The calipers will bolt to the Capri knuckles and then the Galant upgrade which is still better than the Escort stuff you are talking about.
The escort does have a superior bearing system, so there's that.