advice on heads

I think he mentioned a .050 shave on the heads. But, I like the closed chamber idea rather than the ones I have now. also, I cannot change the cam as I have already bought it. So I am assuming the best option at this time is the closed chamber heads. can I use the rockers from the J heads on them with new pushrods the same length.

the LA's use a shaft or rail mounted rocker while the EQ's use a stud or pedestal mounted type rocker. You can either get a set of stock magnum rockers that bolt down to heads on a pedestal/pivot or put in studs and use stud mounted rocker like these.