Look closely at the diagram from Oregon Fuel Injection. See how the lines run thru the clamps. Four lines go thru the clamp on the drivers side and thats the only clamp with all four lines running thru it. I found is nearly impossible to use the original nuts and bolts. So I purchased longer bolts. Then taped the nuts to the open end of my wrench so I could fit it under the clamps and thread the bolt into it. Also a very small set of vice grips holds the clamp tight to the lines and rubber insulator for easier nut and bolt fitting. this clamp install is a really bad idea but my way works for me.