I built my own Aqua-Hot exhaust pipe and it's worked perfectly for three years. I have about 12 bucks in the whole system but it's not polished aluminum. Works for the generator too.
Bob Retired Army Traveling alone now.
2008 Camelot 40 PDQ 4 slides ISL400 towing a 2016 Dodge Ram 1500 4x4 Quadcab
Western MT in summer, AZ, NV in winter