I've just fitted a new interstate low level header pipe on the right hand side and the pipe, whilst fitting up to the silencer o.k. and running parallel to the Frame rail, it's quite a bit tighter to the Frame than the one I've just took off. There's only about 1/4" to 3/8" gap. OK let's say 5/16" :wink: I haven't started it yet but can you see this being a problem, vibration movement will be amplified further away from the source, yes?