new lazy lifter....

Pretty dang positive, yeah.

I see only one part number for flat tappets on their website.
GM .842 only.
Doesn’t say if it’s a hyd or a solid.

The fact that they all come from one or two places doesn’t necessarily mean they’re all the “same”.
Different vendors can have them made to their own specs....... so a set from Isky may not be the same thing you get from Lunati.

I kinda feel like the place that makes them should have a decent handle on what works best, so if you get the manufacturer branded pieces(like Hylift Johnson), you’re getting their version.