I have one of these that I bought a while back, had intentions of using it on my
project but I'm not sure at this point. The place I get my powdercoating done at
quoted me somewhere in the neighborhood of $200 to sandblast and coat the header
and pipe. They have to use a ceramic coating as regular powdercoat will not stand
up to the heat. As for the baffle, it is designed to be removable and replaceable, its
just the fact that it's rusted in the pipe that makes it seem like it isn't. There is typically
a bolt or rivet in the very end of the pipe that secures it in. The problem is going to be getting
the baffle out of the pipe. If it's really rusted in there, you might be able to use a bunch of
penetrating oil and a slide hammer to get it out....it just depends on how severely stuck it is.
If it comes out and the pipe is still in good enough shape, you can replace the baffle, but they
aren't exactly a cheap item. Just a guess, figure $75-$125 depending on what you're looking for.
So...after all this, you have to ask yourself what it's worth. You're probably looking at about $300
and a lot of work to get this pipe looking and sounding like a new one. (Providing it's not rusted through
or otherwise severely damaged. You could find another system new or good used for this amount or not
much more. So...really just depends on what you want, how much you want to spend. Hope this helps!