i'm using 6-32 size stainless wire. i wrap it around the pipe on the back side of the widest part. some pipes you may need to wrap at the stinger. form a circle around the pipe, slip fuel tubing over that section of the wire. bend the wire in & down as needed to lay against the side of the tub. drill 2 holes in the engine compartment, 2 small peices of aluminum or cf to lay in & out, 2 4-40 allens, flat washers (in & out) & nylock nuts. bend the wire foward to lay beside the 2 allen screws & form a long "U" to lay down the opposite side of the screws. push it foward against the cone or bulge in the pipe, & while keeping some pressure on the mount, tighten the 2 allen screws. easily made, easily adjusted, dirt cheap. just loosen the screws & slide. as long as you have some pressure pushing into the coupler, i've never had an issue.