Yep you guys were right ... a major PITA to install. Lance , the knowledgeable pro rigger at Eliminater in Havasu spent several hours installing the headers ... the instructions were about 20 pages with small print. Now I am looking at an additional $1500 for SS fabricated pipes to hook up to my exhaust holes and tips. (wasn't Eliminator's fault ... I will post the pictures of the headers installed and how far away they are from the exit holes.) This kind of dough ? ... I think I would have gone the Raylar route or saved for a pre-built 525 or something.