I was considering the hydraulic roller to offset(at the time)the problem and concern with the lack of zinc in our engine oil, and its effects on flat tappet cam style engines. At that time, the concern regarding the oil was shared by many, but the interest in considering a hydraulic roller conversion wasn't. Granted, it can be a pricey upgrade, but it is immune to the ongoing degrading of our engine oil, as all our modern engines use that technology. In time maybe the interest will grow, but it is doable now with little problem, just the initial cost of the cam and lifters being the most costly.
