How much lift with stock magnum roller lifters?

I wonder if you could take the springs and plungers and discs out and use them as solids? Certainly somebody's tried it. I would.
Yes you can, a fellow I know has done it. In fact I have a few set up that way in my garage. The internal parts combo came out of disassembled 350 chevy lifters. He has 5 seasons on his Dart using the converted lifters, he run his stuff hard and has had no issues.