360 TrueStreet Magnum Build

Now you got me thinking of pulling a junkyard magnum that is just a shortblock and doing this to it for my truck and pulling all the stuff off my 318LA that it would need.

what'd you do to the heads? I'm sorry I am a complete noob here. I don't understand how one would port valves. Could you explain a lil? could it be done at home?