Originally Posted by agrazela
2) The stainless version is mated to a mild steel head flange and crossover flange recycled from a stock manifold, and often cracks in those spots within months.
If they ever came out with an entirely stainless version, it might be worth looking into, but would likely be cost-prohibitive.
There is a reason for that.
Since stainless expands significatly more than mild, it can snap the exhaust bolts/studs.
So, it'* safer to use mild for the flange.
That'* what I did with my buddies turbo manis.
I don't like how they used the stock cast flange though. Thats just asking for cracks..