We're doing a battery relocation kit and this is the easiest and best looking way to clean up the necessary wiring.

As for not offering it OEM, they actually offer grounding kits in Japan in almost every high performance car as a factory option. You are not going to get 10-15 HP, I think the largest claim is somewhere in the 3 HP range, which is completely not noticeable. However, it does clean up the electrical noise much like a thicker spark plug wire.

I'm in no way touting these products as the "Ultimate in Performance," but we were placing an order and figured we'd pass along the savings. If we don't plan on selling large amounts of a product this is how we offer it to our customers. Look at the alcohol inection thread. We need 5 kits and we're selling them at our price to save the members money if they were going to get it.