Who races w/OE Magnum short blocks

Interesting thread, Rumble. And, all that commented. I've owned (and still own) a few magnums, of course they are what came in the vehicles.
I have always run the LA's in my older stuff just because it's what I had (have), but I plan on doing something with mags in the near future. In fact, I have a 5.2 mag on the stand now. I also have a RPM air gap I bought for a magnum. I have two cams right now, one is the factory MP crate 300 horse cam (has fuel pump snout), and the other is a roller from a '89 360 LA (also has fuel pump snout).
We'll see where it goes......