[Retroman1969]

I've thought long and hard, but with 170,000 miles on my car, I'm not going to spend thousands on upgrades since it is on borrowed time after this anyway. If and when it blows, I will drop in a lower mileage used 2.5 and have the IMSB and chain tensioners replaced during the install. I'll likely go with the "solution" as it's the more permanent piece-of-mind. Since the ceramic ball bearing one has a recommended replacement time, I'd have to be replacing it every 18 months with the high number of miles I rack up on a car. Most owners won't have to worry about that.