In the past I've used relatively cheap headers such as the Heddman Hedder units with the ball and socket type collector. Or just a flat end connector that you put a gasket in, run the 3 bolts through the header flange & exhaust pipe flange and tighten them up. Now I have a set of Mad Dog headers that match my motor plate. These headers have a collector where one end of the collector slides up over the 4 individual header pipes. Then the other end is just a 3 1/2 inch opening with no flange what so ever. How am I supposed to attach an exhaust pipe to these? Do I just weld to the collector end? Or is there some type of clamp that goes over the collector and the exhaust pipe? Sorry for the novice question but I want to make sure that I do it the right way.