Got a NIB Streetdampr from Vibratech, the folks that make Fluidamprs. Its p/n 716242-001, Chevy small block 6-3/4" O.D. internal balanced. It was originally bought for a TPI motor. Sold the car before the install and it's been in the garage since.
Wanting $120.00 Shipped, this is kinda heavy considering it's a balancer.
Don't know if this will work, but here's a link to Jegs.
If it doesn't work go to their home site, look at engine components, then balancers and you'll see Fluidampr. They sell for $179.00 plus shipping.
This will not fit LS1 or LT1 motors. If you would like pics, leave your e-mail, but it's still in the box, unopened.
Thanks for looking.