Schumaker vs TTI Headers

Space duster, It may be who makes them for Schumacher. I know that headers made for Clifford the 6 cylinder people,a minimum of 25 sets have to be on order for them to tool up and make a run.
Check with Mike at Schumacher if they come with the flanges to make head pipes. I believe they do. One set I made, the other was from the muffler shop