Yes, you do. Can you get the aftermarket holes to look like the originals? I didn't look closely enough at the repop after locating an original 400 trunk lid, but my initial thought was no.
1968 400 Coupe, verdoro green, black vinyl top, auto 1969 GTO Judge coupe, Carousel Red, manual 1971 Trans Am, cameo white, auto 1970 Buick Skylark Custom Convertible 350-4(driver), Fire Red, white top, auto 1972 Buick GS Stage 1, Royal Blue, black vinyl top, auto