Well, I have on order at the moment a full Viking Exhaust by
@Paul Bryant a member here on the forum. He makes several options and you can contact him for what you want:
Viking Exhaust : Contact Us
Also there is CES from Down-under, Many people run this header with various slip-ons:
Home-Custom Exhaust Specialists-CES
Carpenter racing in NJ makes a couple of systems and are easy to find on line:
Carpenter Racing