Originally Posted by
aerowoof
os muffler 704 is the one you need,rare and hard to fine,you engine is the blackhead that came out early to mid 70's,it tool the place of the goldhead from the late sixties.these were produced just at the time mufflers were starting to be required at most fields.
thank you so much for the response. I’ll look for one but I will probably have to manufacture a header/muffler setup for it. I’m guessing the 704 was a strap on?. I have a couple of headers and tuned pipes/mufflers I can make work.
thanks again, bill