Captain Excellent: I don't believe this will be an issue. Those materials are all on one "side" of the galvanic corrosion chart so nothing to bad there. I have done lots of other SS/Al/brass mixes before with great luck outdoors. Heck, won't look worse than the yellow zinc coating the put on some of these OEM screws and bolts. omekim: Excellent, thank you for confirming that. Huge help now in selecting a rear spring.