Did you cut a hole where the battery used to sit?
My previous skylines have been defected for cutting holes, DOT inspectors said it weakens the crush zone of the body and all piping should go through factory holes or be plumbed around the body.
My current rb20 piping is done this way.
I wish the service was the same quality.
For some reason Leigh (ETM) quoted me higher through these forums, and $150 lower (same car, same manifold) on CLT forums under a VLT orientated username.
They both take months to reply to pm's and email, thats if they do...
The prices these days are a bit steep for a street car.... I'll be making my own.