273 adjustable rockers on a 360

so if i pull the rockers, and the rods every thing will switch right over. Also GoodyGotcha mentioned something about "MP". What exactly do u mean I'm assumeing your just talkin about the the way they lock and that i need to replace them with a better locking system. Also i just noticed that i have a set on another motor but if i remove them i would like to put something back on the 273 so will the stock non adjustable rocker work on the 273.