i just helped a friend with his magnum build and he picked up a regrind from oregon. the 2204 grind, it's 484 lift w/ 214/221 @ .50 along with the hughes 1199 kit, install was a breeze.
with this cam, stock rockers are no problem but you'll likely need to get longer pushrods-- he did on his-- but they're inexpensive and easy to obtain.
figure on doing cam bearings and heads will be a coin flip as to whether they'll be any good or need work, etc.