73 Swinger 440 project

Looks like I might be striking out on pulleys, thanks anyway to the guys that have pm'd me trying to help. Anyone used the 1/4" crank pulley spacers that AR Engineering makes that Mancini sells? It doesn't look like they have the little snout to center the pulley and they are thick enough that the pulley would be forward of the little snout on the balancer that centers it, are the bolts going to keep it centered enough that I won't have problems?