I would like to install a chain tensioner on my '06 eton 90. I was reading that a few of you have used HPD Chain Tensioner. I see there is another option on Hetrick's site called Maximum RPM Chain Tensioner. Which one works best on the eton? Does it just bolt up or do I need to drill? If I go with HPD, which part do I order? Anyone have some pics?

Thanks for your help!