Normally I would always fit the correct parts. But in this case I think it would just be throwing money away.
If the aftermarket diaphragms don't sound good and fail easily, they are also throwing money away, test one carefully before replacing the whole batch.
Corrosion X is a really good product for eliminating corrosion and preventing it in the future. It will still require cleaning, but if you spray it on and wait a few hours, you can eliminate 50 to 75% of the cleanup work. It even prevents bi-metallic corrosion, which is a typical problem in drivers, where there is steel, aluminum and titanium and alternating current. Add moisture from condensation (or drinks funneled in
), and you have a science fair project that could be prevented with Corrosion X.
I wish I had known of the stuff when I owned ninety 2445s and sixty 2425s in Minnesota...