speedyyg

I am thinking about going to a fuel injection system from a ford truck. It is pretty much like the fox body style. I don't know to much about computers so i need a little help. The cam I am using in my 5.0 is running off the 351 firing order. Is there anyway you can reflash the computer to change that? Also I do like having my MSD ignition, I can't seem to find anyway to keep it. Can anyone shed somelight on this for me.

Thanks