65 BARRACUDA 273 Exhaust Flange problem

Hi,
I'm in Brisbane, Australia and am finishing my 65 that I bought in Virginia about 3 years ago.
When it arrived here it had no exhaust at all, stopped at manifiolds.
I am wanting to make a new system but am a bit confused by the set up.
It has the standard manifolds, that bent up thing on the Left(D/side) but I have not been able to ascertain whether it should have some form of Flange Gasket OR just a Flared Tapered pipe onto the manifold.
Any help appreciated.