Warmonger, what do you mean exactly by diff. size/shape? Non SVT intake lift is the same for primary & secondary. SVT has 0.001 in more lift on secondary.
As for the source, let's just say:
1) It's the very best.
2) No, I didn't actually measure all the above cams, but I could have.
I suppose I could add the lift specs if anyone is interested.
