I gotta agree with Will, based just on what I saw when I cleaned mine
In my opinion, the factory magnet is borderline useless. It'* just one of them plastic magnets like mom has a whole fridge of.
Didn't look to me like it would be very long before it was just overwhelmed.
Granted, if you have a good, well maintained tranny already, then adding more magnets is probably overkill. But personally, I got mine out of some burnt out hard drives I found in the trash bin here, so not only did I get to rip the guts out of a hard drive (FUN!!) I got 5 pretty heavy duty magnets (broke one) to play with "just in case"...
I'll see what good they do in a month or two when I change my filter again
1998 SE Midnight Blue Pearl
Gutted airbox, FRAM AirHog, removed MAF Screen, eBay clear corners, extended brake lights
I'm so much cooler online