Didn't it include the adapter flange for the stahl pattern. Here's the Headman weld up 1-7/8" kit I bought from slummit for $278, Has the adapter flange to go from standard port to the spread port (stahl) patern.
After me screwing with it for 2 weeks, and NOT getting 2 tubes finished like I wanted I turned it over to a chassis builder I race with. The $500 I paid him, and the $250 for coating was worth every penny!!! I will never try that again!!!!
turned out nice tho...
My hat is off to you for the knack of being able to design / construct your own headers. I learned quickly it's surely not my thing!!!