I picked these up earlier this year for a friend. I didn't know it but by the time I had found them he had already found another NOS setup. He has $225 in this set and wants that back out of them. Only have one hold down bracket and it has no packaging or GM sticker but I am sure it is NOS and not reproduction because it has the stamp on the side and reproductions do not have that.

 

another picture of the top side of the hold down bracket and inside the bottom of the pins.

 

Hello Eric,
I'll take them, consider the set up SOLD. Sending you a PM now...
Regards,
Jim

 

Darn! I missed a decent deal on another part I need.

If Jim decides he doesn't want these, I do.