you cant clamp the pipe you speak fo and jb weld it, use an egr block off plate, make an egr block off plate, jb weld the hole for the egr on the back of the head, there arte alot of proper and bullshit ways to do it on the motor side. and for the header just take out the bolt that the egr tube is suppoed to go into, put a nickle in the hole on the header and tighten the bolt down.