I have a good BHJ balancer for sale. Bought it with a engine I picked up years ago but no longer need it because I have one of my own. Asking $350 shipped.
They are SFI approved and they are billet. That one in the picture is for internal balance. Factory 3.8 would be external balance. They are like $600 new without trigger wheel. I bought mine 10 years ago and it came with trigger wheel. Whats pretty cool is it has a timing mark at 25 degrees after for cam sensor install. AT least newer ones do.