Rhoads Lifters
I have used them a couple of times before. They do so have a tick that can be heard, I do not find it troublesome to the ears. They (Rhodes) advertise there bennifits in which I can attest to that they will do exactly as advertised.
I have used them as direct swap outs. The next engine will use pushrods that only depress the lifter approx..010+ a little more since the last .010 and less is not advisable for use or as a limit. This will give maximum use of the variable lifters abilty.
At one point a few of us freinds used them on the intake side only to create a fake and temporary split cam for low end driving. The combo was a little mismatched. The lowering of the intakes duration helped in the street manors of the car.
(It really needed more converter)