new lazy lifter....

Well now this is interesting a 360 hydraulic cam engine with 273 adjustable rockers. Aren't the 273 adjustable rockers supposed to be used with solid lifters ?

More info . . .

That's correct. As long as you use the correct length pushrods for hydraulic lifters, you can use the adjustable mechanical rocker arms. In fact, it's a good idea if you really want to zero in on lifter preload.