I have no experience swapping brake components from one car to a DIFFERENT car (different accentuated to point out different design not just different color). But I can tell you that hydraulics are specifically designed by surface area affected and if the calipers in the excahnge have different size pistons you could be working with a design issue.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician