la/mag cam info

Will a magnum cam fit? Yes.
BUT
A Magnum cam uses a short nose that will not accept a fuel pump eccentric, unless you use the Hughes adaptor.
Magnum cams are designed for a 1.6 rocker ratio, LA cams are designed to use a 1.5 ratio. Use of a Magnum cam in your LA will alter the lift specs.
Lifters, and lifter bores, are identical between the LA rollers and the Magnums.