My 88 Coupe had the spoiler on it - OEM - and I bought the Coupe from the orginal owner (a lady, who did no mods/accessories after the purchase). The spoiler is a dense foam material and is fastened with double faced tape and to end bolts (I think). It sets straight outward more than upward, sorta like an older Nascar spoiler look I thought. My 2 cents...
1993 Legend LS Coupe 6spd-Sirius White Pearl-24K (12/04-?)
1993 Legend LS Sedan-Sirius White Pearl 80K- (8/00-4/09 R.I.P.)
1988 Legend L Coupe-Noble Silver Metallic (8/04-10/05)
1988 Legend L-Olympia White (2/04-12/04)
1987 Legend L-Ascot Grey Metallic (12/89-2/04)