balancer coming apart

My buddies balancer blew apart just like that last year the night before we were leaving for Mopars in the park! It was from Hughes racing, he called them, and they said any internal (zero) balance balancer would work just fine. They just didn't recommend racing with the factory one. His ran right into the timing chain cover just like that! As far as I know the 318 balancer still on his 416, and he's on a 1000 plus mile trip to Atlanta with it right now, and will be driving it out to Mn next Friday for Mopars in the park!