Help! Fuel Line O-Rings

[robhauser]

Does anyone have the part numbers for the two o-rings for the supply and return fuel lines for a 1990 Corvette? These are for where the fuel lines meet the fuel rail. The set I got from Advance include one larger one (that appears to fit) and one smaller one that seems way too small. The lines appear as if they would accept the same two o-rings.

Thanks in advance for any assistance you can provide.

Rob
1990 Base Coupe
Richmond, VA