I finally found a place which can sell me a y-pipe for my 1986 IROC camaro.

Does anyone here know what size of y-pipe was used on the single cat '86 IROC?

I know the exhaust is 3", but im not sure if the y-pipe varies from that. I measured the y pipe from the cat, and it was 3" there.

Thanks for the help!

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1986 IROC Camaro
305 TPI "LB9"
3.23 gears
Doesn't know enough about cars.
AIM: jesusathome