The Rubber "O" ring boots that are on the Firebird TA Ram Air snorkel system on the Pontiac in 70-75 era.
Supplied as a pair, stock availability varies on these, check ahead if you wish.
BELOW: You may also need the metal retainer shown ... its not included on this boot supply ..but check.. IF you do they are also listed separately see number PW17285
.jpg "Trunk Floor: 55-57 Chev Pan w/out braces *")
.jpg "Valance Panel: 67 Firebird")