i popped the hood to check the oil and i find this fine black powder everywhere. it looks to be coming from the belt, but the belt looks fine...they are brand new as off about a month ago, the same time i put the pulley on. we didnt put a smaller belt on, because i heard the 94/95'* belt tensioner makes up for it. do i need a smaller belt, or what else could be up?

The first thing besides the belt that comes to mind is the harmonic balancer. But first, I'd clean it up, especially on the SC nosedrive and pulley, then check it with the white glove treatment in a few days.

Even with the 94/95, the larger tensioner is strongly reccommended for your car when running the smaller pulley on the SC. A gatorback belt will also help.