I looked at their site as you recommended when I asked earlier and still did not find any kind of warranty or any mention of HP recommendations for this unit. I know it has worked for different rears in the past with more HP than most of us have, but I don't think it will be the same rear, or they wouldn't have to be making them. Are there any straight forward answers to these questions? If not, that is cool. I can understand that with a semi-custom made part, but I would like to know before.