This is the later type GM trunk weatherstrip which is also latex but has a bigger profile than original. It is the longer superceeded number for 60's, 70's GS but also may be correct for 80's Regals etc. I do not know the part number. It has the plastic hollow piece in the rubber not string like the old style. Has made in Canada decal on it. Sell for $100 which is way less than I paid for it on Ebay.