I was just looking over Danish's web site and noticed 2 of the 1JZ pics had different outlet pipes.
I always thought they were all the same!! I guess not!
(I hope you don't mind using you pics as examples danish)
This one: (which is the same as the engine from a JZZ30 I have)
And this one: (What model did your engine come from Danish?? JZX80??)