2nd Gen camaro door skin NOS info

[Billohio]

I have a set of door skins and wanted some feedback on pricing and info on why there seems to be a few part numbers for the same parts. I read something about the handle stamped area might be a little different but then the guy measured it and they were the same as the older ones.
I need to look at the box and see what the date on the one is. (one is in GM box)
My part numbers are 20162371 and 20160965. I thought it was odd the numbers arent consecutive like some gm ones are.
I found none of these for sale in a google search.
Thank you