I haven't torqued my header since i installed it 2 years ago, and there's no sign of needing to
Same here, factory toyota gasket, 7-8 years.
You can go through life being scared of the possible, or you can have a little fun and tease the inevitable.
Give a man venison, he'll eat for a day. Teach a man to hunt Blacktail, he'll be frustrated for life!