Scream'n 318 ?

What I wouldn't do is use a hydraulic anything camshaft.
What I would do is take apart the stock hydraulic roller lifters and machine some solid "guts" out of aluminum and reinstall the pushrod seats and assemble them with quality snap rings making them into solid rollers. J.Rob
been considering this my self but figured it be considered butchery!! one issue with stock rollers is there heavy as is, adding a slug just gonna add to that!