bucket seat backs

[bigbadbu]

So Im pretty sure I just found a set of NOS bucket seat backs but I cant find any results on the part number 20520743 so any help would be great.. and yes they will be for sale soon. If i don't use them to make repops.

Thanks
Rob

 

[Ribbedroof]

After tracking the supercessions backwards, I came up with a bunch of number changes

Maybe one of the GM dealer guys on here can sweet talk his parts guy into checking...looks like the earliest number was 20090784