Trunk RPO code sticker

[gnxtc2]

On a 1987 trunk RPO sticker, what does the six digit number mean after the VIN? The six digit number is before the "J47".

Thanks

Billy T.
gnxtc2@aol.com

 

[gnxtc2]

Could someone compare the six digit number against the cowl plate to see if they're the same.

Billy T.
gnxtc2@aol.com