lmcracing

I have a 1996 GT and am in the process of swapping in a new 4.6 PI motor from 2001 . My questions is, my GT (1996) has a different balancer on it that looks aftermarket. Can anyone tell me if its over/under drive and if the balancer should be used on the swap. The pulley is smaller than stock making it overdrive I would think. Anyways, I will attach pictures of the balancer in question (looks like billet) and pictures of the new ford balancer I purchased (black).