My kittie got into one of my 5.25" drivers on my M60's and torn into the rubber ring, and dented the aluminum driver. Amie was kind enough to send a replacement to me, but today as I was going to swap them I discovered they do not match. I sent Amie an email, but I figured you fine folk would likely have a good answer as well.

The original driver is marked 5A12-15S192. It has two larger exposed magnetic rings and sits about 1/8" taller than the new driver. The outer ring is stamped FE0312.

The new driver is marked 5A12-15SS. The new driver also does not have any exposed magnetic rings as the back of the driver is encased, which is stamped FE0809.

Should I bother swapping the new driver in?

Thanks!