I used the ATP Z332. I was running the factory EFI with a 904 transmission. This flexplate has the proper weight required for the 5.9 Magnum, which is different than the 360 LA weight.
My 5.9 originally came with the crank pulley bolted to the balancer, but it was bad and I ended up buying a later version that has the pulley and balancer in one piece. I couldn't find a standalone balancer that I was sure had the correct Magnum balance. Only the Magnum 5.9 had the one piece setup, so that's what I went with.
