dynoport is the company who makes the bender pipes, and I went and looked at haucks site, looks like he is making the srx pipes for hauck now as well. Rich Daly, he is the owner of dyno port and bender racing as well, he got the company(bender) a few years back.
Hope its not too confusing but the basic point is hauck has other people build the pipes for him, they just add a name tag to them for him and he makes more money off the item.
theres been differnt makers over the years and most of the time you can see who the original maker of the pipe was was just by the design of the pipes.
jaws jr, you were right, i had not seen dynoport was making the pipes for hauck, sorry.