I rounded up another set of MP, a set of stock used wide pads, and a set of Indy.
There might be another set of MP coming my way in the future but this seems like enough
testing for now. I feel I know what I'm talking about with these parts I've checked.

The very worst one is a 1.49 wide pad, the very best one is a 1.56 MP.

There are enough in-between to make closely matched sets, which is the goal (beyond knowing what's what).

The Indy's are consistent at a little over their advertised ratio, but don't fit the Victor heads
Very well. I decided I'm going to run Indy roller intake and MP exhaust on this 572.