9" Backing Plates GM Drums

[Boz]

Looking for backing plates for a 9" that allow me to use aluminum GM drums. Had some about 6 years ago but can't remember where I got them. Thanks

 

[lilbowtie]

Mine came off of a 66 chevelle - I'm sure there must be others

 

[pontiacgp]

I don't know if this helps but the A body Chevelle backing plates mount with 4 bolts like the 9" and use the same drum as the G body drum. I'm using the G body drums on my 67 Chevelle rear