I got them from Idjmtoy.com. I looked on there site just now and don't see the ones I have, but I have had mine for a couple years now. Looks like they have some that are better now. Check them out.
Ordered up 3 filter mags. One for the oil filter, one for fuel, and one for the Allison spin on. I know the Allison has a magnet already but what the hell.
Well I changed my oil today. Used to run ams oil 15w-40 with filter. I found a shaeffers oil dealer close to home so now I will run shaeffers 5w-40 with a mobile M1-303 filter.