I have put on extractors and had a new larger exhaust fitted. The old one was fine, mufflers all seemed good. A few scrapes and dents on the pipes as they drop out of the manifolds.
I expect it would last another few years on a daily drive car.
In a week or two I'll be getting rid of a pool fence to the recyclers and the whole exhaust and manifolds will go with it if not taken by someone before then.
I also have a freshly painted engine mount heat shield to go with it ... It just missed on fitting with the extractors - but they are ceramic coated so heat should not be an issue now.
So just pick it all up for nothing if you want. I am in Blackburn area (Melbourne)
...... Michael