Believe since was hacked up so bad wouldn't fully seal. Heard alot of lightning will get reversion https://cimg9.ibsrv.net/gimg/www.off...de4c1e4888.jpg

Finally 10 posts. I prefer the water to be dumped closer to the pipes if not thru the hull.
https://cimg5.ibsrv.net/gimg/www.off...33a9d99210.jpg
https://cimg4.ibsrv.net/gimg/www.off...79f96d6ca.jpeg

You could by their jacketed thru-hull tail extension (541410) they don't look like they weld on like the collector extensions. Other than that you could make any custom setup you wanted but need to have the pipe cooled.

Those are what I wanted but he wont sell them..and honestly the dude was not good to deal with. Looking at just making a set for now

What is the difference between the 2 diameters? Permatex makes a high temp silicone I use on header gaskets that will work to seal the inner pipe to the outer. Otherwise cut the outer diameter back and tig weld the inner tubes together.