I doubt you will find a decent used battery relocation assembly but it doesn't hurt to look.
Rather than JEGS or Summit try Karbelt Speed & Custom. They offer catalog shopping and they are 100% Canadian owned. Plus, they are competitively priced to the US alternatives.
I personally prefer the Taylor polished aluminum battery box ,with the Taylor battery relocation kit, and a Jerry Bickle remote shut off switch assembly. It looks clean and professional , if installed correctly.
