Hydraulic cam for slant

I wish that changing to a hydraulic camshaft was easy in a slant. If so, I might change my 1964 225 to hydraulic so I could use Rhoads leak-down lifters as I do in my 1965 Newport 383 and 1965 Dart 273. The later was a fairly easy swap from the OE solid lifters, though required shorter ball & cup pushrods. I recall the slant lifters are the same diameter, but doubt a Rhoads lifter would work since hydraulic cam slants don't have oil ports in the lifter bores, relying instead on oil flowing down the hollow pushrods.

Another thing to consider is changing to an earlier "drool tube" head. The reason is that you can change lifters with the head in place. Your later "peanut" head requires removing the head to get the lifters out. But, verify heads interchange. That is something owners fuss about in my 2002 3.8L pushrod V-6 Chrysler engine, that you must remove the heads to change lifters.