exhaust hose

Greetings - I have a universal M3-20B that’s about 15 years old. When a local shop installed it, they left the old steel muffler and most of the exhaust line in place, including everything after the muffler, most of which is made of ABS drain pipe. I suppose it has been Ok but the whole set...

Both of my cockpit drain hoses were leaking. I found the marine exhaust hose that Catalina used on my boat but wanted to see if anyone has advice on fitting the new hoses in. The space is super small and the hoses only flex a little bit as the length is 18inches or so. Any advice would be...