A pair of 20 year old Hi-Teks on a 502MPI in very salty water .
New zincs as required only .

I allegedly had the last 2 pairs of stainless, double-wall, full-length headers that Bassett made himself. Long tube, 4.5" collector and tails. I bought them USED in 1991, and ran them until this last renovation (over 30 years) because I'm going twin turbo. Never had a single issue with them in all those years, and never heard a set of headers thump so hard. They went to a good home though!

23 years on CMI Etops TRS tails - pressure checked with a torch - still going strong.

**Mostly salt use. Flushed with dawn since I've had boat (five years).