is there a gasket between the maniflods and the y pipe? i have a car i'm putting back together, and not having taken it apart, i dont know if there is a gasket there or not. the maniflods have a cone shaped part sticking down and there is not sealing surface for a flat gasket. i bought a borla off-road Y for 93-95 and the opening to the Y looks like it would accept the cone on the manifols as far as shape goes. but the size looks wrong w/ the Y being bigger. is this a self sealing design? or do i not have 93 manifolds?

 

Its been a while but if I remeber right there is no gasket...its a ball in flange type seal. If the pipe is for a 93 should work I guess. Just curious why you are doing the y-pipe and not headers. The most restrictive part of the entire exhaust system is the manifolds.

 

Rules say we have to run stock manifolds ...

 

look here for the answer to why stock manifolds.
http://web.camaross.com/forums/showthread.php?t=330664
http://web.camaross.com/forums/showthread.php?t=291645
http://web.camaross.com/forums/showthread.php?t=308208

by the way, i got out there while i was waiting on you guys to answer. i bolted up a manifold to the Y (off the motor and out of the car) and all seemed well. funny how the guy @ O'rylies tried to sell me gaskets for this!
thanks for the help.