"Don't know what year your car is but if a 1995 or 1996 the outlet piece on the CAI is the air for the vented Opti."
All 94-96 B/D bodies have vented optis.
"96 caprice with a 95 super sport engine."
All B/D body LT-1's are the same, Caprice LT-1 = ImpalaSS LT-1.
The vacuum connector and opti vent harness are essential whether aftermarket or not.
'95 9c1, pcmperformance.com 93 tune, Dynomax Ultraflo catback, K & N box filter, LT4 KM, 160 stat, 3.08 Posi.