I did that years ago and wrote up what I did:
http://www.mach1registry.org/forums/...d.php?t=111610
Basically you will either need a boot-a-pump or a 340lph pump, that will take care of the extra fuel, no need for injectors at that point. I did not add injectors until I added boost.
when I ran nitrous with that setup, it was a wet system so still did not need injectors.
Have fun.