i have recently bought muffler and tips from a guy. it is missing the Y-pipe before the muffler, the plates, and the tips to connect to that. where can i go to get just those parts?

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Peter
KnightWhoSaysNI83
'83 Z28, 383(destroked 400 bored .060), comp 268 extreme energy cam, forged pistons 9.5:1 comp., excelerator intake, 875cfm holley vacuum sec., MSD 6AL box, accel coil., Hooker headers-3inch exhaust-borla mufflers.