Reguardless! Your right!
There are a few headers made like that through the years. More race style than street though. Hooker has a set that I can picture in my head that has the #1 tube going straight down through the K frame. It makes a 90* turn rearwards to the collector.
I think it is "Crackedback" that has for sale Hookers or Hedmans that have this style but only 2 pipes doing that. Big pipe IIRC @ 1-7/8.