Yes; each year has slightly different colors, trims, panels, etc.Sandalwood is three different colors of vinyl for 1970, 1971, and 1972... Certain trims were not available in convertibles that were available in coupes. (Like your seat: You couldn't get Sandalwood with armrest in a 1971 convertible., but you could get Saddle with armrest in a convertible, and you could get Sandalwood NO armrest in a convertible... And you couldn't NORMALLY get buckets in a BUICK Sylark/ GS convertible in 1971 and 1972, but could in Chevy, Olds, Pontiac. Go figure...You would THINK the higher dollar car would have the option... Of course, there ARE those SCO cars... And talk about an odd thing I recently found out...The GS Coupe uses a different rear package tray that a Skylark coupe. (According to Legendary's catalog AND discussion with their sales/ tech staff... WHY?
I ordered the seat cover from Legendary and had a local guy install the cover. Gandy's Trim Shop in Sumter SC. He goes to my church, does excellent work.
