[Angelo DiTocco]

Don't know if you are looking for show pieces or.... ?

But - I have a used set of headers from my Firebird SS that I used for a long time They are 3-Step (1-3/4" to 1-7/8 to 2")... w/ 3-1/2" straight collectors.
The #4 pipe has some repair work done right at the flange - not so pretty - but they work fine. They're coated and dirty but they would clean up ok.
I had a new set built out of stainless to the same specs a few years ago.
I also have a pair of freshly coated 2" to 3-1/4" straight collectors that worked very well.
PM me if you want more info.
Angelo D.