Bumper Inserts: 85-90 REAR Firebird Formula - GM Pair NOSSHOWN WITH WHAT THE ARROWS # 1 & # 2 are pointed at. SUPER SUPER rare to find GM NOS original in the GM Pack rear bumper Inserts or CAPS used on the 3rd gen Firebird Formula with the black LH & RH caps on the bumper face. they also were used on the Front but this is just a Rare rear set. Supplied as a PAIR set ONLY. ONE LAST SET ONLY .. GM #'s 10030541 & 10030542 .. go find some someplace NEW .. seen also on USA Ebay around US$300 EACH SIDE (6 24)