Anyone with experience building tri y headers

Thanks Mattax,that information is great ,when I was searching I came up with 8- 18 inches for the first tubes and overall 36-40 inches for the headers , really like your headers ,where they tuned for midrange rpm ? Good information I’m kind of glad I got to busy at work or headers would have been completed,now I’m going to try to get the first tubes a little closer in length in November when holidays are here. Haha and this all started when I wanted to change the cam HaHa which lead to aluminum heads and headers.